Audi Q7 4M
Weaknesses, engine ratings and buying advice
The Audi Q7 4M (2015–2024) is the second generation — lighter than the 4L but still a heavy SUV. Three core topics: spring breakage, brakes, AdBlue.
Rear springs break — on vehicles without air suspension from 70,000 km, documented cases of both sides failing simultaneously. NHTSA top 3 problem on 2017–2019 ($440–1,320). Recall: front shock absorber fork can crack (2019 models).
Brake wear: Most reported Q7 4M problem — averaging $3,400 at just 23,000 miles per NHTSA. AdBlue system fails — countdown "engine start not possible in X km" ($220–660). AC compressor freezes — averaging $7,000 repair on 2019 model.
Recalls: power steering ECU short circuit (2017, sudden loss of assist!), fuel rail leak (2017–2018 petrol, fire risk). MMI Touch crashes.
Test-drive checklist: Springs visual (car sitting level?), brakes: squealing/vibrating already?, AdBlue error message?, AC: does it cool?
2026 market: 2017–2020 with 50,000 miles $27,500–41,800. SQ7 $38,500–55,000. Insider pick: 3.0 TDI facelift from 2020 with air suspension — no steel spring break risk.
507 PS
SQ7 · Benzin
V8 diesel with e-supercharger — technically unique, emotionally divisive
Legendary!211–218 PS
3.0L TDI V6 Diesel
6 weaknesses
Stay Away!Generations
Engine Overview
The Audi Q7 4M is available with 9 engine variants — from 211 to 507 hp. 1 variants had engine changes — the model year is crucial.
EA897 3.0 TDI V6 with 183 kW — common rail, 4 timing chains on clutch side. EA897 camshaft material defect (sev:5). Chain rattles from 150,000–180,000 km, change 15–20 hours (~€3,000). From ECU MD1CS014 (07/2020): oil pressure problem — pump reduces to ~1 bar below 2,100 rpm, bearings seize. Separate CR pump belt every 120,000 km. EGR coking, DPF on short trips. AdBlue valves clog. Oil every 10,000 km, no longlife.
- !! Low Oil Pressure from Variable Pump and Fuel Ingress from 80,000 km
The CREC (EA897evo) uses a variable oil pump for Euro 6 compliance that delivers too little pressure at low rpm. Combined with fuel ingress from leaking injectors, oil dilution can cause engine damage.
Symptoms: Oil pressure warning, engine noise, emergency shutdown, unusually rapidly dropping oil level, fuel smell in oil - !! Camshaft Fracture (Material Defect EA897) from 100,000 km
The 3.0 TDI (CRT/CREC group) has a known material defect on the camshafts. Affected models 2014–2017. A broken camshaft inevitably causes total engine failure. Costs: up to €20,000.
Symptoms: Ticking or knocking clearly exceeding normal diesel combustion noise, especially on cold start; sudden engine failure - !! DPF Problems from Frequent Regeneration and Fuel Ingress from 70,000 km
Frequent DPF regeneration cycles on the CREC (especially short trips) cause fuel ingress into the engine oil. This dilutes the oil and dramatically increases the risk of engine damage from low oil pressure.
Symptoms: Frequent DPF regeneration messages, fuel smell in engine oil, rapidly dropping oil level, oil pressure warning
+ 2 more engine weaknesses + vehicle weaknesses
EA897 evo 3.0 TDI V6 with 210 kW — highest-output V6 TDI in the large SUV. 4 timing chains on clutch side. Camshaft material defect (sev:5) applies at this output too — higher load doesn't change the design defect. From ECU MD1CS014 (07/2020): oil pressure problem. Chain from 150,000 km, change ~€3,000. HP pump failure contaminates all 6 injectors (€3,500–7,000). Launch hesitation with S-Tronic (TPI 2060454/1). AdBlue valves. Separate CR pump belt every 120,000 km. The strongest diesel option for towing and heavy loads in the large SUV. Oil every 10,000 km.
- !! Timing chain wear from 120,000 km
The 3.0 TDI EA897 has four timing chains that stretch prematurely with insufficient oil pressure. A jumped chain inevitably causes catastrophic engine damage.
Symptoms: Rattling or knocking on cold start or load changes, engine warning light - !! Injector needle seat wear and oil dilution from 150,000 km
Worn injectors no longer seal properly and allow fuel to drip into the cylinder. This dilutes the engine oil and causes bearing damage from lack of lubrication.
Symptoms: Increased fuel consumption, sweet oil smell, dipstick oil smells of diesel - !! Low oil pressure from variable oil pump from 100,000 km
The EA897 evo generation variable oil pump reduces pressure at low rpm for efficiency. With oil-diluted or worn oil, critically low oil pressure can result.
Symptoms: Oil pressure warning light, engine noises at low rpm, elevated oil consumption
+ 3 more engine weaknesses + vehicle weaknesses
EA897 3.0 TDI V6 with 170 kW — common rail, 4 timing chains. Camshaft material defect (sev:5) applies. Chain rattles from 150,000–180,000 km. From ECU MD1CS014 (07/2020): oil pressure problem. Chain change 15–20 hours (~€3,000). CR pump belt every 120,000 km. EGR clogs, DPF on short trips. AdBlue valves. Lower output doesn't protect from the material defect — it's design-related, not load-dependent. When buying: check build date (before/after Feb 2017), engine noises. Oil every 10,000 km, no longlife.
- !! Camshaft material defect (recall risk) from 130,000 km
EA897 EVO engines with camshaft serial numbers CRT 000001–175973 and CZV 000001–003450 (production years 2014–2017) suffer from a material defect. The camshafts can break and cause irreparable engine damage.
Symptoms: Heavy ticking or knocking from the engine clearly beyond normal diesel combustion sounds; engine loss from complete camshaft fracture - !! Timing chain tensioner and chain wear from 160,000 km
The revised EA897 with two timing chains shows chain wear with poor oil maintenance or long service intervals. Repair costs of €3,000–5,000 are typical for the V6 double-chain drive.
Symptoms: Rattling on cold start (1–3 seconds), especially after extended standstill; audible under load with severe elongation - !! Intake tract and EGR heavily coked from 120,000 km
The 3.0 TDI V6 in the A6 and A7 shows pronounced EGR coking at higher mileages. Deposits can block the intake duct by up to 80% and require extensive dismantling for cleaning.
Symptoms: Juddering and misfires under part-throttle, rough idle especially during warm-up, significantly increased consumption
+ 2 more engine weaknesses + vehicle weaknesses
4.0 TDI V8 twin-turbo with 320 kW — diesel eight-cylinder with two turbos in the large SUV and its sport derivative. Recall 21H7 (turbo oil screen too fine) as with CTGA petrol — clogs → turbo bearing wears → shaft breaks. 76,098 vehicles worldwide. V8 timing chain more complex than V6 — stretch from 150,000 km. High maintenance from 8 cylinders. Electric compressor (EPC) as additional failure source. Camshafts factory-paired to heads — damage means pair replacement only. Consumption 8–12 L/100 km. The V8 TDI twin-turbo is the most expensive engine to maintain. Oil every 10,000 km, 5W-30, never longlife. Check recall 21H7 first.
- !! Fuel dilution of engine oil from 40,000 km
Excessive DPF regeneration events allow diesel fuel to enter the engine oil, causing the oil level to rise. A known problem with no permanent fix — regular oil level checks are essential.
Symptoms: Rising oil level, oil level above maximum, slight increase in consumption, occasional diesel smell from engine bay - !! Electric compressor (EAV) failure from 80,000 km
The electrically driven auxiliary compressor of the 48V system fails at higher mileages. The symptom is poor throttle response in the low rpm range. Repair is complex.
Symptoms: Poor throttle response on take-off, power loss below 2,000 rpm, engine management warning light - !! Intake manifold coking from 100,000 km
Intake manifold and tumble flap coke up from blowby gases and EGR. Cleaning sometimes requires a full engine removal; repair costs are therefore very high. Primarily affects short-trip vehicles.
Symptoms: Power loss, poorer throttle response, increased fuel consumption, rough running
+ 2 more engine weaknesses + vehicle weaknesses
EA897 evo 3.0 TDI V6 with 183 kW — common rail, 4 timing chains on clutch side. EA897 camshaft material defect (sev:5) affects this engine — batches until at least October 2017. Improved manufacturing after, but risk not zero. Timing chain rattles from 150,000–180,000 km on cold start, chain change 15–20 hours (~€3,000). From ECU MD1CS014 (07/2020): oil pressure problem — electronic pump reduces to ~1 bar below 2,100 rpm. Consequence: bearings seize. No official Audi update. Separate CR pump belt every 120,000 km. EGR coking, DPF on short trips, AdBlue valves. Launch hesitation with S-Tronic (TPI 2060454/1) documented. Oil every 10,000 km.
- !! Timing chain rattles on cold start from 120,000 km
Hydraulic chain tensioners lose oil pressure on cold engine. At start-up the chain rattles loudly for 1–3 seconds. Advanced wear risks chain jump and engine failure.
Symptoms: Loud rattling or clattering directly after cold start, subsiding after a few seconds. With greater wear, rattle persists when warm. - !! Camshaft fracture — material defect from 100,000 km
On 272-hp variants (built up to Jan 2017) camshafts broke due to material defects. On failure, metal fragments can destroy the engine. Audi replaced camshafts as a goodwill gesture.
Symptoms: Clicking or rattling from the valve train, rough engine, engine oil contaminated with metal particles. - !! AdBlue system: pump and injector failure from 80,000 km
AdBlue pump, heating element or injector fails, especially after frost periods. Engine remains unaffected, but the vehicle will not start after several cycles.
Symptoms: AdBlue system fault warning on display, SCR fault codes, restricted drive readiness once warning counter expires.
+ 2 more engine weaknesses + vehicle weaknesses
EA897 evo 3.0 V6 TDI with 210 kW and 48V mild hybrid — effortless engine with 286 hp for the heavy large SUV. 4 timing chains. EA897 camshaft material defect (sev:5). From ECU MD1CS014 (07/2020): oil pressure problem. 48V MHEV adds complexity: belt starter generator (recall 27H2 fire risk, 2017–2020), voltage converter. Chain from 150,000 km, change ~€3,000. CR pump belt every 120,000 km. EGR, DPF, AdBlue standard diesel topics. Oil every 10,000 km, no longlife.
- !! Chain Tensioner and Timing Chain Wear from 130,000 km
The 3.0 TDI EA897 in the Q7 4M has four timing chains that can stretch with worn tensioners or insufficient oil pressure. Skipping causes engine damage.
Symptoms: Rattling on cold start, metallic impact noises on load change, engine warning light - !! Injector Wear with Oil Dilution from 150,000 km
Leaking injectors allow diesel into the crankcase and dilute the engine oil. Critical especially with frequent DPF regeneration with increased fuel injection.
Symptoms: Oil level rises on dipstick, diesel smell from the oil, oil becomes thin and turns black - !! Oil Mist Damages Brake Booster from 80,000 km
On certain 3.0 TDI installations in the Q7 4M, oil mist was routed incorrectly and damaged the membrane of the vacuum brake booster. Result: loss of brake assist.
Symptoms: Hard, stiff brake pedal, significantly longer stopping distance, warning light
+ 2 more engine weaknesses + vehicle weaknesses
EA839 3.0 TFSI V6 with 250 kW — turbocharged (no longer supercharged like predecessor). Timing chain with known cold-start clatter: missing check valves in oil passages → oil drains back → tensioner not immediately supplied on start. From ECU MD1CS014 (07/2020): identical oil pressure problem as EA897 evo — electronic pump reduces to ~1 bar below 2,100 rpm. Consequence: bearing and turbo wear. No official Audi update. Catalytic converter disintegration with poor fuel or chip tuning — ceramic dust in cylinders. Oil consumption from rings and separator. Intake valve coking. Oil every 10,000 km, 5W-30.
- !! Water Pump Internal Failure with Coolant Migration from 80,000 km
The EA839 water pump system fault affects the CREA in the Q7/Q8 4M as well. Vacuum-controlled system fails internally, coolant migrates into vacuum system. 4-bolt pump = original state, 6-bolt = already replaced.
Symptoms: Coolant warning light, P0299 'boost pressure too low', coolant loss without external leakage, 'drivetrain fault'. - !! Rocker Arm Roller Failure — Early Production
Early EA839 units (GP0 code) have poor-quality rocker arm rollers that can fall out. In the Q7/Q8 with its higher vehicle weight and trailer use this is particularly critical.
Symptoms: Combustion misfire, clattering from cylinder head, rough running, engine warning light. - !! Coolant Leaks from Seals from 80,000 km
Beyond water pump failure, the EA839 in heavy SUVs more often shows coolant leaks at hoses and seals due to higher thermal stress.
Symptoms: Coolant smell, dropping coolant level, overheating warning.
+ 4 more engine weaknesses + vehicle weaknesses
EA839 3.0 TFSI e V6 plug-in hybrid with 340 kW system output — turbo petrol plus electric motor in the large plug-in SUV. Combustion side: EA839 tech with timing chain, cold-start clatter from missing check valves. From ECU MD1CS014: oil pressure problem as with pure EA839. Hybrid-specific: HV battery loses capacity from ~80,000 km, 12V drains faster. Cooling system extremely complex (separate circuits for engine, turbo, battery, e-motor). Charging electronics fault-prone. Catalytic converter disintegration with poor fuel. Intake valve coking. S-Tronic: oil every 60,000 km mandatory. Running a plug-in V6 in the heavy SUV is the most expensive scenario. Oil every 10,000 km, 5W-30.
- !! Water Pump Failure EA839 (Critical) from 100,000 km
The EA839 has a design weakness in the water pump: an internal leak draws coolant into the vacuum system. This can lead to catastrophic engine damage.
Symptoms: Coolant level drops with no visible leak; P0299 fault code; coolant residue on left cylinder head; overheating warning. - !! Recall 93QQ — High-Voltage Battery Fire Risk
The Q7/Q8 TFSI e high-voltage battery (build date 08/2019–07/2024) can overheat during charging and cause a fire. Recall code 93QQ, approx. 18,650 vehicles worldwide affected.
Symptoms: High-voltage battery warning message; charging interrupted; Audi recommends not charging until software update. - !! Hybrid Gearbox Failure V6 PHEV from 80,000 km
The PHEV gearbox installed in the Q7/Q8 TFSI e is the heavily loaded large variant. Defects in the clutch, mechatronic unit and hydraulic control lead to costly repairs.
Symptoms: Shift jerk on pull-away; hesitation when downshifting; gearbox warning message; in worst case complete failure.
+ 6 more engine weaknesses + vehicle weaknesses
EA839 3.0 TFSI e V6 plug-in hybrid with 340 kW system output — turbo petrol plus electric motor in the large plug-in SUV. Combustion side: EA839 tech with timing chain, cold-start clatter from missing check valves. From ECU MD1CS014: oil pressure problem as with pure EA839. Hybrid-specific: HV battery loses capacity from ~80,000 km, 12V drains faster. Cooling system extremely complex (separate circuits for engine, turbo, battery, e-motor). Charging electronics fault-prone. Catalytic converter disintegration with poor fuel. Intake valve coking. S-Tronic: oil every 60,000 km mandatory. Running a plug-in V6 in the heavy SUV is the most expensive scenario. Oil every 10,000 km, 5W-30.
- !! Water Pump Failure EA839 (Critical) from 100,000 km
The EA839 has a design weakness in the water pump: an internal leak draws coolant into the vacuum system. This can lead to catastrophic engine damage.
Symptoms: Coolant level drops with no visible leak; P0299 fault code; coolant residue on left cylinder head; overheating warning. - !! Recall 93QQ — High-Voltage Battery Fire Risk
The Q7/Q8 TFSI e high-voltage battery (build date 08/2019–07/2024) can overheat during charging and cause a fire. Recall code 93QQ, approx. 18,650 vehicles worldwide affected.
Symptoms: High-voltage battery warning message; charging interrupted; Audi recommends not charging until software update. - !! Hybrid Gearbox Failure V6 PHEV from 80,000 km
The PHEV gearbox installed in the Q7/Q8 TFSI e is the heavily loaded large variant. Defects in the clutch, mechatronic unit and hydraulic control lead to costly repairs.
Symptoms: Shift jerk on pull-away; hesitation when downshifting; gearbox warning message; in worst case complete failure.
+ 6 more engine weaknesses + vehicle weaknesses
4.0 TFSI V8 twin-turbo with 331 kW — turbos between cylinder banks (hot-V), extreme heat stress. Recall 21H7: oil screen in turbo supply too fine → clogs → turbo bearing wears → shaft breaks. Turbos wear from 60,000–80,000 km, repair five-figure. V8 timing chain from 150,000 km. Oil consumption from 60,000 km from DI and aluminium-silicon bore surfaces. Camshafts factory-paired — pair replacement only, extremely expensive. 10 documented weaknesses. S-Tronic: oil change every 60,000 km mandatory. Bore surface wear with sulphur-containing oil. Oil every 10,000 km with low-SAPS 5W-30, never longlife. Check recall 21H7 first.
- !! Cylinder Bore Cracks (Recall)
Audi recall 10G9: cracks can form on the surface of cylinder bores, leading to engine damage, stalling or oil leaks. Audi replaces affected engines free of charge.
Symptoms: Sudden stall, oil leakage, engine warning light, in worst case engine failure during driving - !! Turbocharger Lubrication Problems from 120,000 km
High-performance 4.0 TFSI turbochargers need a constant oil supply. Insufficient lubrication or degraded oil leads to overheating and turbocharger damage, especially after high-load driving.
Symptoms: Whistling, power loss, blue smoke, increased oil consumption through turbo seals - !! 48V Belt Starter Generator Failure from 50,000 km
The 48V BSG of the mild hybrid system fails prematurely on some vehicles, producing a flood of warning lights. Steering and brake boost can be impaired.
Symptoms: Multiple simultaneous warnings (electrical, drivetrain), system crash, occasionally no engine start possible
+ 7 more engine weaknesses + vehicle weaknesses
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| Air Suspension Compressor and Air Bags Failed Standard air suspension shows frequent compressor and air bag failures from 80,000–120,000 km. Leaking bags make the compressor run continuously until it burns out. Symptoms: Vehicle sitting low on one side, audible hissing during level adjustment, air suspension warning, compressor runs continuously from 90,000 km | High | |
| Rear coil spring fracture — both sides simultaneously On vehicles without air suspension (steel spring option), rear springs fracture prematurely from 70,000 km. Cases documented where both sides fail simultaneously. NHTSA: top 3 problem on 2017–2019 Q7. Symptoms: Clunking rear axle; vehicle sits lower at rear on one side; visibly broken spring. from 70,000 km | Medium |
Test Reports
Vehicle inspection (HU)
Few defects, good results for the age bracket
2024Top Reported Issues
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Known Problems and Issues +
A total of 65 weaknesses have been documented for the Audi Q7 4M (2015–2026) — 57 engine-related and 8 vehicle-related. 3 problem engines: CREC (3.0L TDI V6), CZZA (3.0L TDI V6), CVMD (3.0L TDI V6). Typical issues affect Suspension, Other, Brakes, Electronics.
Q7 (CREC, 2015–2019) — Stay Away!: Low Oil Pressure from Variable Pump and Fuel Ingress, Camshaft Fracture (Material Defect EA897), DPF Problems from Frequent Regeneration and Fuel Ingress. Power: 245 PS.
Q7 (CZZA, 2015–2018) — Stay Away!: Timing chain wear, Injector needle seat wear and oil dilution, Low oil pressure from variable oil pump. Power: 211–218 PS.
Q7 (CVMD, 2015–2019) — Stay Away!: Camshaft material defect (recall risk), Timing chain tensioner and chain wear, Intake tract and EGR heavily coked. Power: 245 PS.
Q7 (CZAC, 2016–2024) — Be Careful: Fuel dilution of engine oil, Electric compressor (EAV) failure, Intake manifold coking. Power: 435 PS.
Q7 (CREA, 2015–2019) — Be Careful: Water Pump Internal Failure with Coolant Migration, Rocker Arm Roller Failure — Early Production, Coolant Leaks from Seals. Power: 333–340 PS.
Q7 (DCU, 2020–2024) — Be Careful: Cylinder Bore Cracks (Recall), Turbocharger Lubrication Problems, 48V Belt Starter Generator Failure. Power: 507 PS.
Q7 (DCBE, 2019–2024) — Be Careful: Water Pump Failure EA839 (Critical), Recall 93QQ — High-Voltage Battery Fire Risk, Hybrid Gearbox Failure V6 PHEV. Power: 333–340 PS.
Q7 (DHXA, 2018–2019) — Be Careful: Chain Tensioner and Timing Chain Wear, Injector Wear with Oil Dilution, Oil Mist Damages Brake Booster. Power: 286 PS.
Q7 (DTHA, 2020–2024) — Be Careful: Timing chain rattles on cold start, Camshaft fracture — material defect, AdBlue system: pump and injector failure. Power: 286 PS.
What to watch out for with the Audi Q7? See the detailed listing of all engine and vehicle weaknesses in the sections above.
Frequently Asked Questions
What problems and weaknesses does the Audi Q7 4M have? +
What should I look for when buying a used Audi Q7 4M? +
Which engine is recommended? +
Which Audi Q7 4M engine is the most fun? +
Is the Audi Q7 4M worth buying used? +
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Last updated: February 2026 · All information without guarantee