BMW X1 E84
Weaknesses, engine ratings and buying advice
The BMW X1 E84 (2009–2015) is a compact SUV built on the 3 Series E90 platform — real rear-wheel-drive architecture, proper BMW dynamics, and one engine that defines the entire ownership equation.
That engine is the N47D20. Every diesel X1 uses it: sDrive18d, sDrive20d, xDrive20d, xDrive23d. The timing chain sits at the rear of the engine, between block and gearbox, and the plastic guide rails become brittle and crack. When the chain jumps or breaks, the engine is destroyed. Failures documented below 60,000 km. Early builds (2009–2011) with sharp-edged sprockets are worst. There is no preventive maintenance interval — it either holds or it doesn’t. Cold-start rattling from the rear of the engine for more than 3 seconds is the warning sign. Many N47s give no warning at all before catastrophic failure. Chain replacement: $1,500–5,500. If you buy a diesel E84, buy one with documented chain work or price it in.
The petrols tell a different story. The N20B20 2.0L turbo (2012–2015) is the sweet spot — responsive, no serial defect, adequate power. Watch for coolant loss from the oil filter housing module (~80,000 km, $200–1,500). The N55B30 3.0L turbo inline-six is the performance pick with no comparable chain risk. The N52B30 naturally aspirated six (early cars) is mechanically simple — electric water pump is the only predictable failure ($350–650). The N46B20 2.0L NA is the stress-free base option.
Vehicle-level: the xDrive transfer case (ATC350) wears its needle bearing at the propshaft take-off. Scraping at low speed or whining under load — the diff fluid is “sealed for life” and never checked during service. Failure: $2,500–6,500. Rear wheel bearings fail early (40,000–50,000 km, $300–650). Underbody rust is dismissed by BMW but can compromise steering knuckles.
The paradox: ADAC and TÜV rate the E84 above average — because most N47 timing chains survive past the first owner’s holding period. The catastrophic failures hit the second or third owner.
Test-drive checklist: Cold start mandatory: rattling from the rear of the engine = walk away. xDrive: listen for scraping at parking speeds (transfer case). Wheel bearings: rumble that changes with cornering direction. Oil filler cap on N47: milky residue = head gasket concern. Service book: oil change intervals on diesel — extended intervals accelerate chain wear.
2026 market: N47 diesel from $4,500 / $5,000 (cheap entry, potential $5,500 repair). N20 petrol from $6,500 / $7,000. Clean xDrive28i N20: $9,000–13,000 / $9,000–14,000. Insider pick: xDrive28i N20B20 (2013–2015), under 100,000 km, with documented coolant system service — enough power, xDrive for all-weather use, no timing chain lottery.
306 PS
xDrive35i · Benzin
Turbo Six Crossover
Fun to Drive!90–224 PS
2.0L Diesel Diesel
9 weaknesses
Stay Away!Generations
Engine Overview
The BMW X1 E84 is available with 10 engine variants — from 90 to 360 hp. 2 variants had engine changes — the model year is crucial.
Widely used four-cylinder diesel with common-rail injection and piezo injectors. The notorious timing chain issue is the central concern: the chain sits at the gearbox side (rear of engine), stretches with irregular maintenance, and can snap — total engine loss. BMW revised the design multiple times (sharp-edged sprockets until 2009, improved from 2010) but never fully resolved it. Metallic rattling on cold start is the warning sign. Second major issue: the high-pressure fuel pump can shed metal shavings throughout the entire fuel system — requiring replacement of injectors, rail, and lines. On the positive side: the engine is economical in daily use (5-6 L/100km real), delivers solid torque from 1,750 rpm, and runs 250,000+ km with proper care. Short oil change intervals (max 15,000 km, better 10,000) and BMW-spec oil (LL-04) are mandatory. Used car purchase: have timing chain condition checked via endoscope or chain tensioner reset value.
- !! Timing chain breaks — known serial defect from 100,000 km
The N47D20 is notorious for its serial timing chain defect. The rear-mounted timing chain stretches and plastic guide rails break. Chain breakage causes total engine failure. Affected: build years 2007–2015.
Symptoms: Scraping or rattling noises on cold start from the rear of the engine. The damage often gives no acoustic warning and occurs suddenly. - !! Water pump defective — overheating risk from 120,000 km
The N47 water pump fails prematurely. When it does the engine overheats, causing secondary damage to an already vulnerable engine. Preventive replacement is recommended.
Symptoms: Coolant temperature rises suddenly, coolant loss, engine warning light, in the worst case overheating damage. - !! High-pressure pump failure — metal swarf in the system from 200,000 km
The high-pressure pump can wear internally and introduce metal swarf into the fuel system. Rail, pressure sensor, and all injectors are affected — complete system replacement is necessary.
Symptoms: Engine goes into limp mode; will not restart; fault code "rail pressure too low"; in the worst case the engine no longer runs
+ 6 more engine weaknesses + vehicle weaknesses
Widely used four-cylinder diesel with common-rail injection and piezo injectors. The notorious timing chain issue is the central concern: the chain sits at the gearbox side (rear of engine), stretches with irregular maintenance, and can snap — total engine loss. BMW revised the design multiple times (sharp-edged sprockets until 2009, improved from 2010) but never fully resolved it. Metallic rattling on cold start is the warning sign. Second major issue: the high-pressure fuel pump can shed metal shavings throughout the entire fuel system — requiring replacement of injectors, rail, and lines. On the positive side: the engine is economical in daily use (5-6 L/100km real), delivers solid torque from 1,750 rpm, and runs 250,000+ km with proper care. Short oil change intervals (max 15,000 km, better 10,000) and BMW-spec oil (LL-04) are mandatory. Used car purchase: have timing chain condition checked via endoscope or chain tensioner reset value.
- !! Timing chain breaks — known serial defect from 100,000 km
The N47D20 is notorious for its serial timing chain defect. The rear-mounted timing chain stretches and plastic guide rails break. Chain breakage causes total engine failure. Affected: build years 2007–2015.
Symptoms: Scraping or rattling noises on cold start from the rear of the engine. The damage often gives no acoustic warning and occurs suddenly. - !! Water pump defective — overheating risk from 120,000 km
The N47 water pump fails prematurely. When it does the engine overheats, causing secondary damage to an already vulnerable engine. Preventive replacement is recommended.
Symptoms: Coolant temperature rises suddenly, coolant loss, engine warning light, in the worst case overheating damage. - !! High-pressure pump failure — metal swarf in the system from 200,000 km
The high-pressure pump can wear internally and introduce metal swarf into the fuel system. Rail, pressure sensor, and all injectors are affected — complete system replacement is necessary.
Symptoms: Engine goes into limp mode; will not restart; fault code "rail pressure too low"; in the worst case the engine no longer runs
+ 6 more engine weaknesses + vehicle weaknesses
Widely used four-cylinder diesel with common-rail injection and piezo injectors. The notorious timing chain issue is the central concern: the chain sits at the gearbox side (rear of engine), stretches with irregular maintenance, and can snap — total engine loss. BMW revised the design multiple times (sharp-edged sprockets until 2009, improved from 2010) but never fully resolved it. Metallic rattling on cold start is the warning sign. Second major issue: the high-pressure fuel pump can shed metal shavings throughout the entire fuel system — requiring replacement of injectors, rail, and lines. On the positive side: the engine is economical in daily use (5-6 L/100km real), delivers solid torque from 1,750 rpm, and runs 250,000+ km with proper care. Short oil change intervals (max 15,000 km, better 10,000) and BMW-spec oil (LL-04) are mandatory. Used car purchase: have timing chain condition checked via endoscope or chain tensioner reset value.
- !! Timing chain breaks — known serial defect from 100,000 km
The N47D20 is notorious for its serial timing chain defect. The rear-mounted timing chain stretches and plastic guide rails break. Chain breakage causes total engine failure. Affected: build years 2007–2015.
Symptoms: Scraping or rattling noises on cold start from the rear of the engine. The damage often gives no acoustic warning and occurs suddenly. - !! Water pump defective — overheating risk from 120,000 km
The N47 water pump fails prematurely. When it does the engine overheats, causing secondary damage to an already vulnerable engine. Preventive replacement is recommended.
Symptoms: Coolant temperature rises suddenly, coolant loss, engine warning light, in the worst case overheating damage. - !! High-pressure pump failure — metal swarf in the system from 200,000 km
The high-pressure pump can wear internally and introduce metal swarf into the fuel system. Rail, pressure sensor, and all injectors are affected — complete system replacement is necessary.
Symptoms: Engine goes into limp mode; will not restart; fault code "rail pressure too low"; in the worst case the engine no longer runs
+ 6 more engine weaknesses + vehicle weaknesses
Widely used four-cylinder diesel with common-rail injection and piezo injectors. The notorious timing chain issue is the central concern: the chain sits at the gearbox side (rear of engine), stretches with irregular maintenance, and can snap — total engine loss. BMW revised the design multiple times (sharp-edged sprockets until 2009, improved from 2010) but never fully resolved it. Metallic rattling on cold start is the warning sign. Second major issue: the high-pressure fuel pump can shed metal shavings throughout the entire fuel system — requiring replacement of injectors, rail, and lines. On the positive side: the engine is economical in daily use (5-6 L/100km real), delivers solid torque from 1,750 rpm, and runs 250,000+ km with proper care. Short oil change intervals (max 15,000 km, better 10,000) and BMW-spec oil (LL-04) are mandatory. Used car purchase: have timing chain condition checked via endoscope or chain tensioner reset value.
- !! Timing chain breaks — known serial defect from 100,000 km
The N47D20 is notorious for its serial timing chain defect. The rear-mounted timing chain stretches and plastic guide rails break. Chain breakage causes total engine failure. Affected: build years 2007–2015.
Symptoms: Scraping or rattling noises on cold start from the rear of the engine. The damage often gives no acoustic warning and occurs suddenly. - !! Water pump defective — overheating risk from 120,000 km
The N47 water pump fails prematurely. When it does the engine overheats, causing secondary damage to an already vulnerable engine. Preventive replacement is recommended.
Symptoms: Coolant temperature rises suddenly, coolant loss, engine warning light, in the worst case overheating damage. - !! High-pressure pump failure — metal swarf in the system from 200,000 km
The high-pressure pump can wear internally and introduce metal swarf into the fuel system. Rail, pressure sensor, and all injectors are affected — complete system replacement is necessary.
Symptoms: Engine goes into limp mode; will not restart; fault code "rail pressure too low"; in the worst case the engine no longer runs
+ 6 more engine weaknesses + vehicle weaknesses
Widely used four-cylinder diesel with common-rail injection and piezo injectors. The notorious timing chain issue is the central concern: the chain sits at the gearbox side (rear of engine), stretches with irregular maintenance, and can snap — total engine loss. BMW revised the design multiple times (sharp-edged sprockets until 2009, improved from 2010) but never fully resolved it. Metallic rattling on cold start is the warning sign. Second major issue: the high-pressure fuel pump can shed metal shavings throughout the entire fuel system — requiring replacement of injectors, rail, and lines. On the positive side: the engine is economical in daily use (5-6 L/100km real), delivers solid torque from 1,750 rpm, and runs 250,000+ km with proper care. Short oil change intervals (max 15,000 km, better 10,000) and BMW-spec oil (LL-04) are mandatory. Used car purchase: have timing chain condition checked via endoscope or chain tensioner reset value.
- !! Timing chain breaks — known serial defect from 100,000 km
The N47D20 is notorious for its serial timing chain defect. The rear-mounted timing chain stretches and plastic guide rails break. Chain breakage causes total engine failure. Affected: build years 2007–2015.
Symptoms: Scraping or rattling noises on cold start from the rear of the engine. The damage often gives no acoustic warning and occurs suddenly. - !! Water pump defective — overheating risk from 120,000 km
The N47 water pump fails prematurely. When it does the engine overheats, causing secondary damage to an already vulnerable engine. Preventive replacement is recommended.
Symptoms: Coolant temperature rises suddenly, coolant loss, engine warning light, in the worst case overheating damage. - !! High-pressure pump failure — metal swarf in the system from 200,000 km
The high-pressure pump can wear internally and introduce metal swarf into the fuel system. Rail, pressure sensor, and all injectors are affected — complete system replacement is necessary.
Symptoms: Engine goes into limp mode; will not restart; fault code "rail pressure too low"; in the worst case the engine no longer runs
+ 6 more engine weaknesses + vehicle weaknesses
The N46B20 is a two-litre four-cylinder with Valvetronic variable valve lift, producing between 129 and 150 hp as the successor to the M54B22. In daily use a pleasantly smooth and economical engine that eliminates the conventional throttle body through continuously variable valve lift. The most well-known weakness is the Valvetronic eccentric shaft — when its bearings wear, rattling and clattering noises appear, and the repair is involved, sometimes requiring cylinder head removal. Timing chain and tensioner should be inspected beyond 150,000 km; a stretched chain makes itself known through rattling on cold starts. The crankcase ventilation system is a known wear item that can cause oil leaks and rough idle when it fails. VANOS solenoid valves become contaminated with extended oil change intervals. When buying used, listen for clean idle and ask about oil consumption — more than 0.5 litres per 1,000 km is a warning sign. Overall a reliable engine when the known wear items are kept in check.
- !! Timing chain stretched / chain tensioner defective from 130,000 km
The timing chain stretches prematurely due to a faulty chain tensioner. Plastic guide rails become brittle and break. Engine damage from chain jump is possible.
Symptoms: Rattling or clattering on cold start in the first few seconds, which improves or worsens as the engine warms up. - !! Valvetronic eccentric shaft / actuator motor defective from 150,000 km
The Valvetronic actuator motor or eccentric shaft fails at around 150,000 km. Fault code 2A67 is typical. The engine runs but without variable valve lift control — increased fuel consumption, limp mode.
Symptoms: Judder at 2,000 rpm; rough cold start; increased fuel consumption; engine stumbling when pulling away; fault code 2A67 - ! VANOS solenoid valve defective from 100,000 km
The VANOS solenoid valves wear and cause rpm fluctuations, power loss, and starting difficulties, especially at low revs.
Symptoms: Rpm fluctuations at idle, power loss at low revs, occasional starting difficulties.
+ 2 more engine weaknesses + vehicle weaknesses
Compact turbo four-cylinder based on the PSA cooperation (Prince engine), identical to the engine in Mini Cooper S and Peugeot 1.6 THP. Timing chain and turbocharger are the known Prince design weaknesses. Chain stretches with short-trip driving and irregular oil changes — rattling on cold start is the warning sign. Turbocharger shows wear from around 100,000 km. Regular oil changes with BMW-spec oil (max 15,000 km) are essential. As a 316i with 136 hp, rather underpowered in the F30 — the engine frequently runs high RPM, accelerating wear. Not an ideal engine for low-mileage city-only driving.
- !! Timing chain stretch from 60,000 km
Prince engine with known timing chain defect. Plastic chain tensioner becomes brittle, chain stretches. If ignored, valve and engine damage is likely.
Symptoms: Rattling on cold start, engine warning light, rough idle, power loss - !! Turbo oil supply line — O-rings defective from 90,000 km
The O-rings on the turbocharger oil feed and return lines harden and crack. Oil enters the engine bay and, if repair is delayed, can starve the turbocharger of lubrication.
Symptoms: Burning oil smell; visible oil film around the turbocharger; slight blue smoke under acceleration; whistling turbo noise if bearing damage develops - !! Piston rings and valve stem seals worn from 130,000 km
From around 100,000–150,000 km, N13 engines show increased oil consumption through worn piston rings and valve stem seals. Ignored oil consumption causes cylinder wall scoring.
Symptoms: Oil level drops more than 0.5 L/1,000 km; light blue smoke when accelerating; oil pressure warning at low level; no oil spots under the car (oil is being burned)
+ 4 more engine weaknesses + vehicle weaknesses
BMW's first in-house four-cylinder turbo for the mid-range — the farewell to six cylinders in the 320i/328i. Timing chain and guide rails are the main weakness: BMW extended the warranty in 2015 (7 years/100,000 km) and revised the chain design multiple times. Metallic rattling on cold start should be investigated immediately. The electric water pump fails without warning — preventive replacement at 80,000-100,000 km saves a tow truck. Oil filter housing gasket becomes porous and can mix oil with coolant in worst case. Despite the weaknesses, a refined engine: quiet, good mid-range pull, economical (7-8 L/100km real). Manual transmission is the most durable combination. Replaced by the B48 from 2015.
- !! Timing chain and oil pump chain from 50,000 km
The best-known weak point of the N20. The timing chain and oil pump chain stretch; the chain tensioner fails. BMW offered an extended warranty (7 years/100,000 km) for pre-2015 models.
Symptoms: Rattling on start, engine warning light, sudden power loss, in extreme cases engine damage - !! Electric water pump failure from 90,000 km
The electric water pump fails, risking overheating. A BMW-typical problem across all engines with electric coolant pumps since the N52 generation.
Symptoms: Overheating warning, temperature gauge rises quickly, coolant warning - !! Oil pump chain / oil pump sprocket defective from 80,000 km
On the N20 the oil pump sprocket can wear prematurely or the oil pump chain can break. In documented cases (50,000 km) an internal drive component failure caused complete oil pump failure — catastrophic engine damage.
Symptoms: Whistling noise that increases with rpm; oil pressure warning; metallic rushing from the engine bay; unusual vibrations
+ 7 more engine weaknesses + vehicle weaknesses
BMW's first in-house four-cylinder turbo for the mid-range — the farewell to six cylinders in the 320i/328i. Timing chain and guide rails are the main weakness: BMW extended the warranty in 2015 (7 years/100,000 km) and revised the chain design multiple times. Metallic rattling on cold start should be investigated immediately. The electric water pump fails without warning — preventive replacement at 80,000-100,000 km saves a tow truck. Oil filter housing gasket becomes porous and can mix oil with coolant in worst case. Despite the weaknesses, a refined engine: quiet, good mid-range pull, economical (7-8 L/100km real). Manual transmission is the most durable combination. Replaced by the B48 from 2015.
- !! Timing chain and oil pump chain from 50,000 km
The best-known weak point of the N20. The timing chain and oil pump chain stretch; the chain tensioner fails. BMW offered an extended warranty (7 years/100,000 km) for pre-2015 models.
Symptoms: Rattling on start, engine warning light, sudden power loss, in extreme cases engine damage - !! Electric water pump failure from 90,000 km
The electric water pump fails, risking overheating. A BMW-typical problem across all engines with electric coolant pumps since the N52 generation.
Symptoms: Overheating warning, temperature gauge rises quickly, coolant warning - !! Oil pump chain / oil pump sprocket defective from 80,000 km
On the N20 the oil pump sprocket can wear prematurely or the oil pump chain can break. In documented cases (50,000 km) an internal drive component failure caused complete oil pump failure — catastrophic engine damage.
Symptoms: Whistling noise that increases with rpm; oil pressure warning; metallic rushing from the engine bay; unusual vibrations
+ 7 more engine weaknesses + vehicle weaknesses
The 258 hp top version of the N52 is one of the last large high-revving naturally aspirated engines from BMW: a magnesium-aluminium composite block that defines the class through extreme smoothness and a willingness to rev that drivers describe as 'like a sewing machine' — so even and effortless in its climb. Compared to the N54 turbo it sounds cleaner and more natural, without turbo hiss; instead a clear naturally aspirated note that fills out with increasing revs. Cold-start behaviour is impeccable; in daily use it runs nearly maintenance-free. Typical weaknesses: electric water pump (fails without warning, 80,000–150,000 km, preventive replacement recommended), Valvetronic eccentric shaft sensor (fault code, limp mode), VANOS solenoids with sludge build-up. Buying tip: check service history, as missed oil changes can permanently impair VANOS function.
- !! Electric water pump defective from 100,000 km
The N52 electric water pump is a known wear item. When it fails the engine overheats quickly. Recommended: preventive replacement when any abnormalities appear or from around 100,000 km.
Symptoms: Coolant temperature gauge rises quickly, coolant loss, audible pump malfunction, engine overheating. - !! Oil filter housing gasket — oil into coolant from 120,000 km
The gasket between the oil filter housing and the engine block ages and becomes porous, allowing oil into the coolant. Symptoms resemble a head gasket failure. Early replacement of both seals is recommended.
Symptoms: Oil film on the coolant; discoloured oil filler cap; coolant slightly foamy or brownish; no white exhaust smoke — a key differentiator from head gasket damage - !! Eccentric shaft sensor (Valvetronic) failure from 100,000 km
The Valvetronic eccentric shaft sensor fails due to moisture and ageing. Fault code 2A31 is typical. The sensor costs approximately €275; installation requires opening the cam cover.
Symptoms: Rough idle; severe judder with light throttle input; increased fuel consumption (up to +30%); fault code 2A31; engine runs better with the sensor disconnected
+ 2 more engine weaknesses + vehicle weaknesses
BMW's first in-house four-cylinder turbo for the mid-range — the farewell to six cylinders in the 320i/328i. Timing chain and guide rails are the main weakness: BMW extended the warranty in 2015 (7 years/100,000 km) and revised the chain design multiple times. Metallic rattling on cold start should be investigated immediately. The electric water pump fails without warning — preventive replacement at 80,000-100,000 km saves a tow truck. Oil filter housing gasket becomes porous and can mix oil with coolant in worst case. Despite the weaknesses, a refined engine: quiet, good mid-range pull, economical (7-8 L/100km real). Manual transmission is the most durable combination. Replaced by the B48 from 2015.
- !! Timing chain and oil pump chain from 50,000 km
The best-known weak point of the N20. The timing chain and oil pump chain stretch; the chain tensioner fails. BMW offered an extended warranty (7 years/100,000 km) for pre-2015 models.
Symptoms: Rattling on start, engine warning light, sudden power loss, in extreme cases engine damage - !! Electric water pump failure from 90,000 km
The electric water pump fails, risking overheating. A BMW-typical problem across all engines with electric coolant pumps since the N52 generation.
Symptoms: Overheating warning, temperature gauge rises quickly, coolant warning - !! Oil pump chain / oil pump sprocket defective from 80,000 km
On the N20 the oil pump sprocket can wear prematurely or the oil pump chain can break. In documented cases (50,000 km) an internal drive component failure caused complete oil pump failure — catastrophic engine damage.
Symptoms: Whistling noise that increases with rpm; oil pressure warning; metallic rushing from the engine bay; unusual vibrations
+ 7 more engine weaknesses + vehicle weaknesses
Single twin-scroll turbo instead of the N54's twin-turbo — torque comes in evenly from 1,200 rpm and doesn't let up to 5,500. At idle a deep, barely audible hum; under load a rich rumble that surpasses the N54 in refinement but lacks its rawness. Above 5,000 rpm the turbo drowns out the engine — those seeking naturally-aspirated emotion will be disappointed. Valvetronic almost completely eliminates the throttle butterfly; throttle response is therefore more direct than on most turbo engines. The electric water pump is the Achilles heel: fails between 80,000 and 120,000 km without warning. Valve cover gasket starts leaking from 100,000 km — replace the entire cover, not just the gasket. Oil changes every 10,000 km instead of BMW Longlife, 5W-30 LL-04. Tuning: Stage 1 brings 350+ hp; from Stage 2 the HPFP becomes the bottleneck — fit the B58 pump. Considered one of the most reliable M-engines of the last 20 years when maintained properly.
- !! Bearing wear from neglected maintenance from 120,000 km
Connecting rod bearings wear with extended oil change intervals or oil starvation. Particularly affects vehicles on Longlife intervals driven hard.
Symptoms: Knocking from the engine block, oil pressure warning, metallic particles in the oil - !! Electric water pump failure from 130,000 km
The N55 electric water pump typically fails between 100,000 and 150,000 km. A sudden failure while driving can cause overheating damage to the cylinder head or gasket within minutes.
Symptoms: Overheating warning; cooling fan runs continuously or intermittently; slow warm-up; coolant loss at idle - !! Valvetronic eccentric shaft wear from 150,000 km
Oil jet for eccentric shaft lubrication clogs with poor oil maintenance. Shaft wears excessively — loud ticking and Valvetronic system failure.
Symptoms: Ticking noise from engine bay, rough idle, misfires, power loss, extended cranking on start
+ 10 more engine weaknesses + vehicle weaknesses
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| xDrive Transfer Case Bearing Damage The transfer case (ATC350) on xDrive variants suffers premature wear of the needle bearing at the propshaft take-off. Noises from around 100,000 km; complete failure is possible. Symptoms: Scraping and grinding from the front axle at low speed, loud whining or droning under load, juddering on acceleration from 100,000 km | High |
Test Reports
TÜV Report 2018
The X1 E84 passes MOTs much better than average and ranks among the most reliable compact SUVs.
2017-11ADAC Breakdown Statistics 2017
The X1 E84 impresses with a very low breakdown rate.
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Explore more
Known Problems and Issues +
A total of 56 weaknesses have been documented for the BMW X1 E84 (2009–2015) — 49 engine-related and 7 vehicle-related. 2 problem engines: N20B20 (2.0L Turbo), N47D20 (2.0L Diesel). Typical issues affect Gearbox, Rust, Suspension, Electronics.
X1 (N47D20, 2009–2015) — Stay Away!: Timing chain breaks — known serial defect, Water pump defective — overheating risk, High-pressure pump failure — metal swarf in the system. Power: 136–150 PS.
X1 (N47D20, 2009–2015) — Stay Away!: Timing chain breaks — known serial defect, Water pump defective — overheating risk, High-pressure pump failure — metal swarf in the system. Power: 177–184 PS.
X1 (N47D20, 2009–2012) — Stay Away!: Timing chain breaks — known serial defect, Water pump defective — overheating risk, High-pressure pump failure — metal swarf in the system. Power: 204 PS.
X1 (N47D20, 2009–2015) — Stay Away!: Timing chain breaks — known serial defect, Water pump defective — overheating risk, High-pressure pump failure — metal swarf in the system. Power: 136–143 PS.
X1 (N46B20, 2009–2012) — Be Careful: Timing chain stretched / chain tensioner defective, Valvetronic eccentric shaft / actuator motor defective, VANOS solenoid valve defective. Power: 150 PS.
X1 (N52B30, 2009–2015) — Be Careful: Electric water pump defective, Oil filter housing gasket — oil into coolant, Eccentric shaft sensor (Valvetronic) failure. Power: 258 PS.
X1 (N13B16, 2012–2015) — Be Careful: Timing chain stretch, Turbo oil supply line — O-rings defective, Piston rings and valve stem seals worn. Power: 143 PS.
X1 (N20B20, 2012–2015) — Stay Away!: Timing chain and oil pump chain, Electric water pump failure, Oil pump chain / oil pump sprocket defective. Power: 184 PS.
X1 (N20B20, 2012–2015) — Stay Away!: Timing chain and oil pump chain, Electric water pump failure, Oil pump chain / oil pump sprocket defective. Power: 245 PS.
X1 (N55B30, 2012–2015) — Be Careful: Bearing wear from neglected maintenance, Electric water pump failure, Valvetronic eccentric shaft wear. Power: 306 PS.
What to watch out for with the BMW X1? See the detailed listing of all engine and vehicle weaknesses in the sections above.
Frequently Asked Questions
What problems and weaknesses does the BMW X1 E84 have? +
What should I look for when buying a used BMW X1 E84? +
Which engine is recommended? +
Which BMW X1 E84 engine is the most fun? +
Is the BMW X1 E84 worth buying used? +
What horsepower variants are available for the BMW X1 E84? +
Last updated: February 2026 · All information without guarantee