Front suspension (lower arms / ball joints)
usually 100,000–200,000 km · Wear part
Signs: Knocks
Fix: Replace arms
€200–500
Common faults, service intervals and costs
Mercedes-Benz B-Class (W245)
2005–2011
1
engines covered
7
known faults
21,327
roadworthiness tests in the statistics
11
official recalls
Enter your VIN and mileage and get a plan built for your exact engine and gearbox.
The Mercedes-Benz B-Class (W245) was built from 2005 to 2011.
For this generation we cover 1 engines and 7 known faults, each with the mileage range where it usually appears.
The most expensive known risk is Autotronic CVT failure: it usually appears at 100,000–200,000 km and costs €1,500–3,500 to fix.
In UK roadworthiness tests in 2024, at 100–150 thousand km this model most often failed on: lights, wipers and visibility (22.5 %), suspension (15.6 %), brakes (12.1 %). It fails more often than an average car of the same age and mileage on: body and corrosion. It fails less often than average on: steering.
Engines
| Engine | Fuel | Timing drive | Oil |
|---|---|---|---|
| 1.6 / 1.8 / 2.0 CDI (Mercedes OM640, A / B-Class) | Diesel | Chain | 5W-30 · MB 229.51 · ~5.5 L · every 15,000 km |
Faults typical of this model
Faults by engine
1.6 / 1.8 / 2.0 CDI (Mercedes OM640, A / B-Class)
Injector seals / injectors
usually 120,000–220,000 km · Medium risk
Signs: Ticking, smoke, rough idle
Fix: Replace seals or injectors
€300–1,200
EGR valve / DPF
usually 100,000–200,000 km · Medium risk
Signs: Limp mode
Fix: Clean or replace
€300–1,500
Turbo actuator
usually 120,000–220,000 km · Medium risk
Signs: Low power
Fix: Replace actuator / turbo
€400–1,200
Gearboxes
Manual
Clutch wear
usually 120,000–200,000 km · Medium risk
Signs: Slipping, high bite point
Fix: Replace clutch kit
€500–900
Dual-mass flywheel
usually 150,000–220,000 km · Medium risk
Signs: Rattle at idle, vibration pulling away
Fix: Replace with clutch
€700–1,400
Autotronic CVT (A / B-Class W169 / W245)
Autotronic CVT failure
usually 100,000–200,000 km · High risk
Signs: Judder, slipping, whine, limp mode
Fix: Fluid every 60,000 km; rebuild
€1,500–3,500
Scheduled service
Intervals and typical prices for the 1.6 / 1.8 / 2.0 CDI (Mercedes OM640, A / B-Class) engine. Other engines differ in oil, timing drive and some filters; the app gives the exact plan.
| Item | Interval | Typical price |
|---|---|---|
| Engine oil + oil filterEngine | every 15,000 km or every 12 months | €70–150 |
| Cabin (pollen) filterClimate | every 15,000 km or every 12 months | €15–40 |
| Brake fluidBrakes | every 24 months | €50–95 |
| A/C service (regas + desiccant)Climate | every 24 months | €70–150 |
| Air filterEngine | every 30,000 km or every 24 months | €15–45 |
| Fuel filterFuel | every 30,000 km or every 24 months | €40–110 |
| Glow plugsEngine | every 100,000 km | €120–300 |
| Auxiliary (serpentine) beltEngine | every 120,000 km | €70–180 |
| Coolant replacementCooling | every 150,000 km or every 96 months | €70–150 |
| Timing chain inspection (listen on cold start)Engine | every 150,000 km | €0–120 |
| Manual gearbox oilTransmission | every 150,000 km | €60–130 |
| Front brake padsBrakes | usually at 30,000–60,000 km | €60–150 |
| Front brake discs + padsBrakes | usually at 60,000–120,000 km | €150–320 |
| Rear brake padsBrakes | usually at 50,000–90,000 km | €50–130 |
| Tyres (set of 4)Wheels | usually at 40,000–60,000 km | €320–700 |
| Wiper bladesBody | checked at service | €20–50 |
| 12V batteryElectrical | checked at service | €100–220 |
Roadworthiness tests by mileage
Share of tests in the United Kingdom (DVSA MOT, 2024) that this model failed because of each system. Bold red means more often and green less often than an average car of the same age and mileage. Sample: 21,327 tests.
| thousand km | 50–100 | 100–150 | 150–200 | 200–250 | 250+ |
|---|---|---|---|---|---|
| Brakes | 7.6 % | 12.1 % | 16.6 % | 19.4 % | 22.4 % |
| Suspension | 9.3 % | 15.6 % | 20.0 % | 20.1 % | 20.3 % |
| Steering | 0.4 % | 1.0 % | 1.4 % | 1.7 % | 2.8 % |
| Tyres and wheels | 5.6 % | 7.2 % | 8.9 % | 8.5 % | 10.6 % |
| Lights, wipers and visibility | 18.3 % | 22.5 % | 26.1 % | 27.2 % | 27.3 % |
| Body and corrosion | 4.0 % | 7.9 % | 11.6 % | 12.7 % | 15.5 % |
| Exhaust, emissions and leaks | 2.8 % | 4.8 % | 6.8 % | 8.0 % | 8.3 % |
Roadworthiness tests in the Netherlands by age
Share of this model's Dutch fleet that had a defect in each system at a roadworthiness test (APK) in 2025. Bold red means more often and green less often than an average car of the same age and fuel. Sample: 13,678 cars.
| age (years) | 15–19 | 20+ |
|---|---|---|
| Brakes | 9.0 % | 9.3 % |
| Suspension | 12.1 % | 11.3 % |
| Steering | 0.9 % | 1.8 % |
| Tyres and wheels | 16.9 % | 16.8 % |
| Lights, wipers and visibility | 22.2 % | 22.8 % |
| Body and corrosion | 0.5 % | 0.8 % |
| Exhaust, emissions and leaks | 2.0 % | 3.1 % |
Official recalls
Recalls the manufacturer published in the United Kingdom for this model (11). The same recalls usually apply across Europe. Ask an authorised dealer to check by VIN whether your car is affected and whether the work has been done.
- Engine / loss of power Update to improve emissions13/12/2021 · R/2021/399
- Airbag Electrical wiring in steering assembly may be insufficiently grounded11/06/2018 · R/2018/130
- Airbag Steering components may be insufficiently grounded11/05/2018 · R/2018/098
- Airbag Electrical wiring in steering assembly may be insufficiently grounded09/04/2018 · R/2018/069
- Airbag Electrical wiring in steering assembly may be insufficiently grounded18/12/2017 · R/2017/282
- Brakes / ABS / ESP Vacuum line brake booster may break20/06/2017 · R/2017/179
- Fire risk Risk of fire24/06/2016 · R/2016/151
- Brakes / ABS / ESP Possibility of loss of drive14/07/2015 · R/2015/099
The other recalls (3) are listed in the app.
Common questions
Does the Mercedes-Benz B-Class (W245) have a timing chain or a timing belt?
1.6 / 1.8 / 2.0 CDI (Mercedes OM640, A / B-Class): chain.
What are the known problems with the Mercedes-Benz B-Class (W245)?
The faults with the highest risk: autotronic CVT failure (100,000–200,000 km, €1,500–3,500); EGR valve / DPF (100,000–200,000 km, €300–1,500); dual-mass flywheel (150,000–220,000 km, €700–1,400); injector seals / injectors (120,000–220,000 km, €300–1,200). The full list by engine is on this page.
What does the Mercedes-Benz B-Class (W245) most often fail its roadworthiness test on?
In UK roadworthiness tests in 2024, at 100–150 thousand km this model most often failed on: lights, wipers and visibility (22.5 %), suspension (15.6 %), brakes (12.1 %). It fails more often than an average car of the same age and mileage on: body and corrosion. It fails less often than average on: steering.
What should you check when buying a used Mercedes-Benz B-Class (W245)?
Before you buy, ask an authorised dealer to check by VIN that the recalls have been done (11 have been published for this model). On the test drive, watch for these signs: judder, slipping, whine, limp mode; limp mode. The full checklist is in the guide to buying a used car.
Other generations
Models with the same engines
These models share engines with this car, so they share some of its faults too.
Other Mercedes-Benz models
Mercedes-Benz ML (W164) 2005–2011Mercedes-Benz CLS (C219) 2004–2010Mercedes-Benz SLK (R171) 2004–2011Mercedes-Benz Sprinter (906) 2006–2018Mercedes-Benz C-Class (W204) 2007–2014Mercedes-Benz Vito (W639) 2003–2014Mercedes-Benz CLK (C209) 2002–2010Mercedes-Benz E-Class (W211) 2002–2009Mercedes-Benz GLK (X204) 2008–2015Mercedes-Benz E-Class (W212) 2009–2016
Sources and notes
Faults, intervals and prices are indicative and collected from public sources and owner experience; always rely on the service book and a qualified workshop. Test statistics: DVSA – Anonymised MOT tests and results, Open Government Licence v3.0. Dutch tests: RDW Open Data (CC0). Owner complaints: NHTSA ODI (public domain). Recalls: DVSA Vehicle Safety Branch Recalls Database, OGL v3.0. Brand and model names are trademarks of their owners and are used only to describe the vehicles.
Updated 08/10/2026