Ford B-Max 1 — Problems & Common Faults
Weaknesses, engine ratings and buying advice
The Ford B-Max I (2012–2017) is a clever little high-roof MPV with a genuine unique selling point: sliding rear doors with no B-pillar. With the doors open you get a huge, uninterrupted aperture — perfect for getting in and out in tight parking spaces or loading child seats. The packaging is well thought out, the seating position high and commanding, the chassis nicely judged. As a practical family second car or a car for older drivers, the B-Max is hard to beat. The biggest warning concerns the drivetrain: if you choose the 1.0 EcoBoost, you must mind the wet timing belt — it runs in an oil bath and has to be changed strictly to interval (or earlier), otherwise major engine damage looms. More delicate still is the 1.0 EcoBoost paired with the Powershift DCT: the dual-clutch gearbox is prone to hesitation, jerking and oil problems — an expensive repair. If you can, go for the manual. Also typical of the B-Max are the sliding doors themselves: the central locking via the B-pillar contacts causes trouble, with doors failing to lock reliably or throwing faults. The rear brakes with the ATE MK100 system tend to lock up — a known, safety-relevant issue. The flexi-pipe in the exhaust likes to crack and then drones loudly. The wheel bearings often fail early (grinding noise), and the headlights mist up from the inside. Buying advice: on the engine, service history is everything — on the 1.0 EcoBoost demand proof of the timing-belt change; with the Powershift, walk away if in doubt or test the gearbox thoroughly (creep, jerking, shift shock). Open, close and lock the sliding doors several times, check the rear brakes work properly, and listen for wheel-bearing noise on a test drive. A well-kept B-Max with a manual gearbox and documented servicing is a practical, likeable companion — and those doors are, and remain, its best argument.
140 PS
B-Max · Benzin
Well-Motorised Van
Decent90 PS
1.4L Duratec Benzin
5 weaknesses
Good Choice101–140 PS
1.0L EcoBoost Benzin
8 weaknesses
Stay Away!Engine Overview
The Ford B-Max 1 is available with 8 engine variants — from 75 to 140 hp. 1 variants had engine changes — the model year is crucial.
Small common-rail diesel with timing chain, frugal and torquey in the lower range. The injectors are the problem child and can start leaking at high mileage. EGR valve and DPF demand long-distance use, otherwise they tend to coke up and suffer regeneration faults. A solid base with consistent maintenance.
- !! Recall Camshaft Sprocket Material Fatigue (16B42)
Ford recalled approximately 8,400 vehicles (production October 2014 to April 2015) because the camshaft sprocket can fracture due to material fatigue and damage the engine.
- !! EGR Cooler Crack with Coolant Ingestion from 120,000 km
The EGR cooler develops cracks under extreme thermal cycling. Coolant enters the intake tract and forms black foam in the expansion tank. In the worst case a hydraulic lock results.
Symptoms: Black or oily foam in the coolant expansion tank, coolant loss with no external leak, white exhaust smoke, tendency to overheat. - !! Timing belt snaps early (tensioner) from 120,000 km
On the 1.5 TDCi (PSA DV5) the timing belt snaps well before its replacement interval, usually due to a seizing or worn tensioner pulley. If the belt breaks, valves hit the pistons, causing catastrophic engine damage.
Symptoms: Squeal or rattle from the belt drive, engine suddenly cuts out and will not restart, no compression afterwards. Often without any warning.
+ 3 more engine weaknesses + vehicle weaknesses
Small common-rail diesel with timing chain, frugal and torquey in the lower range. The injectors are the problem child and can start leaking at high mileage. EGR valve and DPF demand long-distance use, otherwise they tend to coke up and suffer regeneration faults. A solid base with consistent maintenance.
- !! Recall Camshaft Sprocket Material Fatigue (16B42)
Ford recalled approximately 8,400 vehicles (production October 2014 to April 2015) because the camshaft sprocket can fracture due to material fatigue and damage the engine.
- !! EGR Cooler Crack with Coolant Ingestion from 120,000 km
The EGR cooler develops cracks under extreme thermal cycling. Coolant enters the intake tract and forms black foam in the expansion tank. In the worst case a hydraulic lock results.
Symptoms: Black or oily foam in the coolant expansion tank, coolant loss with no external leak, white exhaust smoke, tendency to overheat. - !! Timing belt snaps early (tensioner) from 120,000 km
On the 1.5 TDCi (PSA DV5) the timing belt snaps well before its replacement interval, usually due to a seizing or worn tensioner pulley. If the belt breaks, valves hit the pistons, causing catastrophic engine damage.
Symptoms: Squeal or rattle from the belt drive, engine suddenly cuts out and will not restart, no compression afterwards. Often without any warning.
+ 3 more engine weaknesses + vehicle weaknesses
Turbocharged three-cylinder with strong torque from low revs. The wet timing belt runs in oil and must be replaced strictly to interval, otherwise expensive consequential damage looms. The early years are known for cooling-system and cylinder-head trouble. Lively, but maintenance-intensive and reliant on care.
- !! Wet Timing Belt Dissolves in Wrong or Old Oil from 100,000 km
The oil-bath timing belt degrades with incorrect oil type or overdue change intervals. Rubber fragments block the oil strainer and endanger the oil pump and connecting-rod bearings.
Symptoms: Unusual noises from engine bay, engine warning light, in the worst case engine seizure from oil pressure loss. - !! Degas Hose at Coolant Expansion Tank Fractures from 80,000 km
The plastic fitting on the turbo coolant hose at the expansion tank becomes brittle and fractures. Rapid coolant loss can overheat the engine in minutes and cause irreparable damage.
Symptoms: Visible coolant loss, steam rising from engine bay, temperature warning. Coolant level drops rapidly. - !! Head Gasket Failure from Thermal Stress from 120,000 km
The integrated exhaust manifold in the cylinder head generates extreme heat. Insufficient cooling (e.g. after degas hose failure) can blow the head gasket.
Symptoms: White exhaust smoke, oil-milk in expansion tank, coolant loss without visible external leak, power loss.
+ 5 more engine weaknesses + vehicle weaknesses
The 1.0 EcoBoost is a turbocharged three-cylinder with surprisingly strong pull and good economy. The central issue is the wet timing belt in oil, which fails at overlong intervals and can disable the oil pump. Early versions also had coolant problems and timing-chain issues. Strict intervals and coolant-level checks are mandatory; well-kept it's a lively turbo-petrol engine.
- !! Degas Hose Coolant Loss from 80,000 km
The Gen3 engines also use sensitive coolant hoses at the expansion tank. Plastic fittings can become brittle and cause coolant loss that quickly leads to overheating.
Symptoms: Coolant level drops without visible leak, temperature warning on the dashboard. - !! Oil-Bath Timing Belt Worn Prematurely from 100,000 km
The 1.0 EcoBoost uses a wet timing belt for the oil pump. Incorrect oil (without Ford WSS-M2C925-B) or overdue change intervals dissolve the belt. A case involving £3,500 damage at 70,000 km has been documented.
Symptoms: Brief flickering of the oil pressure warning light, engine noise under load, cracked or missing belt teeth found on inspection — often total failure without prior warning. - !! Front Cover Seal Leaking — Coolant Loss (TSI 15-1070) from 60,000 km
The front cover seal on early 1.0 EcoBoost engines (up to approx. February 2015) was not oil-resistant. Oil attacks the seal, causing gradual coolant loss. TSI 15-1070 addresses the problem.
Symptoms: Coolant level drops without visible external leak, temperature warning, whitish steam from engine bay.
+ 4 more engine weaknesses + vehicle weaknesses
Turbocharged three-cylinder with strong torque from low revs. The wet timing belt runs in oil and must be replaced strictly to interval, otherwise expensive consequential damage looms. The early years are known for cooling-system and cylinder-head trouble. Lively, but maintenance-intensive and reliant on care.
- !! Wet Timing Belt Dissolves in Wrong or Old Oil from 100,000 km
The oil-bath timing belt degrades with incorrect oil type or overdue change intervals. Rubber fragments block the oil strainer and endanger the oil pump and connecting-rod bearings.
Symptoms: Unusual noises from engine bay, engine warning light, in the worst case engine seizure from oil pressure loss. - !! Degas Hose at Coolant Expansion Tank Fractures from 80,000 km
The plastic fitting on the turbo coolant hose at the expansion tank becomes brittle and fractures. Rapid coolant loss can overheat the engine in minutes and cause irreparable damage.
Symptoms: Visible coolant loss, steam rising from engine bay, temperature warning. Coolant level drops rapidly. - !! Head Gasket Failure from Thermal Stress from 120,000 km
The integrated exhaust manifold in the cylinder head generates extreme heat. Insufficient cooling (e.g. after degas hose failure) can blow the head gasket.
Symptoms: White exhaust smoke, oil-milk in expansion tank, coolant loss without visible external leak, power loss.
+ 5 more engine weaknesses + vehicle weaknesses
Turbocharged three-cylinder with strong torque from low revs. The wet timing belt runs in oil and must be replaced strictly to interval, otherwise expensive consequential damage looms. The early years are known for cooling-system and cylinder-head trouble. Lively, but maintenance-intensive and reliant on care.
- !! Wet Timing Belt Dissolves in Wrong or Old Oil from 100,000 km
The oil-bath timing belt degrades with incorrect oil type or overdue change intervals. Rubber fragments block the oil strainer and endanger the oil pump and connecting-rod bearings.
Symptoms: Unusual noises from engine bay, engine warning light, in the worst case engine seizure from oil pressure loss. - !! Degas Hose at Coolant Expansion Tank Fractures from 80,000 km
The plastic fitting on the turbo coolant hose at the expansion tank becomes brittle and fractures. Rapid coolant loss can overheat the engine in minutes and cause irreparable damage.
Symptoms: Visible coolant loss, steam rising from engine bay, temperature warning. Coolant level drops rapidly. - !! Head Gasket Failure from Thermal Stress from 120,000 km
The integrated exhaust manifold in the cylinder head generates extreme heat. Insufficient cooling (e.g. after degas hose failure) can blow the head gasket.
Symptoms: White exhaust smoke, oil-milk in expansion tank, coolant loss without visible external leak, power loss.
+ 5 more engine weaknesses + vehicle weaknesses
Small naturally aspirated engine with timing chain, modest in its demands and simply built. Power is humble, but it is good-natured to run and not prone to faults. The chain lasts well on clean oil but reacts sensitively to neglected oil changes. No firecracker, yet a dependable companion for everyday duty.
- !! Timing Belt — Interference Engine with No Warning from 140,000 km
Sigma/Duratec 16V engines are interference engines with a timing belt. Ford quotes 150,000 km service interval; workshops recommend 100,000 km. A skipped or snapped belt causes total engine destruction.
Symptoms: No prior warning — sudden engine stall and engine damage if belt snaps without replacement - !! Coil pack blows ECU ignition driver (permanent 2-cylinder misfire) from 130,000 km
On the Fiesta (2002–2008) the twin coil pack fires cylinders 1+4 and 2+3 in pairs. A failing coil can spike voltage back into the ECU and permanently destroy the ignition output stage for two cylinders, so two cylinders stay dead even after a new coil is fitted.
Symptoms: Hesitation and power loss, engine warning light, clear misfire on two cylinders, new coil pack does not cure it, P0301–P0304 codes, rough running. - !! Worn Valve Stem Seals from 120,000 km
The 1.4 Duratec SFDB shows typical oil consumption at higher mileages due to age-hardened valve stem seals. Blue smoke after overrun phases and slight oil consumption are typical signs.
Symptoms: Blue smoke on cold start or after prolonged overrun, slightly increased oil consumption with no visible leak
+ 2 more engine weaknesses + vehicle weaknesses
Robust naturally aspirated engine with timing chain and Ti-VCT cam phasing on intake and exhaust. Mechanically straightforward and durable as long as the oil is changed regularly. The phasers can rattle if oil changes are neglected. Refined running, decent appetite for revs, a classically unobtrusive petrol unit.
- !! VVT Phaser Failed — Cold Start Rattle from 100,000 km
The 1.6 Ti-VCT has excessively narrow oil drillings in the cylinder head (pre-2007 production). The phaser becomes oil-starved and rattles on cold start. Ford improved the design from spring 2007; older engines are more frequently affected.
Symptoms: Diesel-like rattling on cold start that disappears after warm-up; power loss under hard acceleration - !! VCT Camshaft Phaser Contaminated from 80,000 km
The 1.6 Ti-VCT suffers from contamination of the non-replaceable VCT filter in the cylinder head. Metal particles block the filter and restrict oil flow to the VCT solenoids, causing hesitation especially when cold.
Symptoms: Hesitation and power loss on cold start, rough idle below 2,000 rpm, engine warning light - !! Throttle Body Failed — Engine Fault from 160,000 km
The electronic throttle body on the 1.6 Duratec (e.g. Focus Mk2 petrol) frequently fails from 150,000 km due to potentiometer wear or moisture ingress. Fault codes P2108 and P2176 appear; the OEM unit costs £480.
Symptoms: Intermittent engine fault warning, engine won't rev, idle fluctuations, occasional hesitation on take-off
+ 2 more engine weaknesses + vehicle weaknesses
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| PowerShift dual clutch sticks and leaks oil The 6-speed PowerShift gearbox (6DCT450) tends toward stiff gear changes, shuddering when pulling away, broken plastic basket spacers, and oil leaks. A gearbox oil service every 50,000–60,000 km is essential. Symptoms: Shuddering when pulling away and manoeuvring, harsh shift shocks, limp mode, oil patches under the vehicle. from 80,000 km | High |
Alternatives
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Known Problems and Issues +
A total of 45 weaknesses have been documented for the Ford B-Max 1 (2012–2017) — 31 engine-related and 14 vehicle-related. 2 problem engines: M1JL (1.0L EcoBoost), M1DA (1.0L EcoBoost). Typical issues affect Gearbox, Suspension, Electronics, Body. Considered reliable: SFDB (1.4L Duratec).
B-Max (SFJA-ECOSPORT, 2012–2017) — Be Careful: Recall Camshaft Sprocket Material Fatigue (16B42), EGR Cooler Crack with Coolant Ingestion, Timing belt snaps early (tensioner). Power: 75 PS.
B-Max (SFJA-ECOSPORT, 2015–2017) — Be Careful: Recall Camshaft Sprocket Material Fatigue (16B42), EGR Cooler Crack with Coolant Ingestion, Timing belt snaps early (tensioner). Power: 95 PS.
B-Max (M1JL, 2012–2014) — Stay Away!: Degas Hose Coolant Loss, Oil-Bath Timing Belt Worn Prematurely, Front Cover Seal Leaking — Coolant Loss (TSI 15-1070). Power: 120–125 PS.
B-Max (MUDA, 2012–2017) — Be Careful: VVT Phaser Failed — Cold Start Rattle, VCT Camshaft Phaser Contaminated, Throttle Body Failed — Engine Fault. Power: 105 PS.
B-Max (M1DA, 2012–2017) — Stay Away!: Wet Timing Belt Dissolves in Wrong or Old Oil, Degas Hose at Coolant Expansion Tank Fractures, Head Gasket Failure from Thermal Stress. Power: 101 PS.
B-Max (M1DA, 2013–2017) — Stay Away!: Wet Timing Belt Dissolves in Wrong or Old Oil, Degas Hose at Coolant Expansion Tank Fractures, Head Gasket Failure from Thermal Stress. Power: 120–125 PS.
B-Max (M1DA, 2016–2017) — Stay Away!: Wet Timing Belt Dissolves in Wrong or Old Oil, Degas Hose at Coolant Expansion Tank Fractures, Head Gasket Failure from Thermal Stress. Power: 140 PS.
What to watch out for with the Ford B-Max? See the detailed listing of all engine and vehicle weaknesses in the sections above.
Frequently Asked Questions
What problems and weaknesses does the Ford B-Max 1 have? +
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Last updated: February 2026 · All information without guarantee