Mercedes-Benz B-Klasse W246
Weaknesses, engine ratings and buying advice
116–286 PS
2.0L Diesel Diesel
Comfort Van Diesel
Decent109–163 PS
1.3L Turbo Benzin
5 weaknesses
Good Choice120–204 PS
2.1L Diesel Diesel
6 weaknesses
Stay Away!Generations
Engine Overview
The Mercedes-Benz B-Klasse W246 is available with 12 engine variants — from 75 to 286 hp. 5 variants had engine changes — the model year is crucial.
The Mercedes-Benz B 160 d (Diesel, 90–95 PS) comes with 2 different engines: OM607 (2013–2019, Be Careful) und OM607 (2013–2019, Be Careful). Pay attention to the model year for the B 160 d!
The Mercedes-Benz B 180 CDI (Diesel, 109 PS) has the OM651DE18 (1.8L Diesel) — rated: "Be Careful", 5 known weaknesses.
The Mercedes-Benz B 180 d (Diesel, 109–116 PS) comes with 2 different engines: OM607 (2013–2019, Be Careful) und OM607 (2013–2019, Be Careful). Pay attention to the model year for the B 180 d!
The Mercedes-Benz B 200 CDI (Diesel, 136 PS) has the OM651DE18 (1.8L Diesel) — rated: "Be Careful", 5 known weaknesses.
The Mercedes-Benz B 220 CDI (Diesel, 163–177 PS) comes with 2 different engines: OM651DE22 (2012–2014, Stay Away!) und OM651DE22 (2012–2014, Stay Away!). Pay attention to the model year for the B 220 CDI!
The Mercedes-Benz B 220 d (Diesel, 170–177 PS) comes with 2 different engines: OM651DE22 (2014–2019, Stay Away!) und OM651DE22 (2014–2019, Stay Away!). Pay attention to the model year for the B 220 d!
The Mercedes-Benz B 160 (Benziner, 102 PS) has the M270DE16 (1.6L Turbo) — rated: "Be Careful", 7 known weaknesses.
The Mercedes-Benz B 180 (Benziner, 122 PS) has the M270DE16 (1.6L Turbo) — rated: "Be Careful", 7 known weaknesses.
The Mercedes-Benz B 200 (Benziner, 156 PS) has the M270DE16 (1.6L Turbo) — rated: "Be Careful", 7 known weaknesses.
The Mercedes-Benz B 200 Natural Gas (Benziner, 156 PS) has the M270DE16 (1.6L Turbo) — rated: "Be Careful", 7 known weaknesses.
The Mercedes-Benz B 220 (Benziner, 184–190 PS) comes with 2 different engines: M270DE20 (2012–2019, Be Careful) und M270DE20 (2012–2019, Be Careful). Pay attention to the model year for the B 220!
The Mercedes-Benz B 250 (Benziner, 211 PS) has the M270DE20 (2.0L Turbo) — rated: "Be Careful", 7 known weaknesses.
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| Rust on Door Lower Edges and Axle Springs Door lower edges of the W246 rust, though less severely than the predecessor. Axle springs and components corrode and can break through oxidation. Rust susceptibility inappropriate for the price level. Symptoms: Rust at door lower edge, springs broken through corrosion, paint blistering from 100,000 km | Medium |
Alternatives
Known Problems and Issues
A total of 75 weaknesses have been documented for the Mercedes-Benz B-Klasse W246 (2011–2019) — 68 engine-related and 7 vehicle-related. 2 problem engines: M266 (1.5-2.0L), OM651DE22 (2.1L Diesel). Typical issues affect Rust, Gearbox, Electronics, HVAC. Considered reliable: M282 (1.3L Turbo).
B-Klasse (OM640, 2005–2012) — Be Careful: Injectors Leaking — Tar Deposits and Pressure Loss, Timing Chain Rattles — Chain Tensioner Worn, EGR Valve Coked Up and Stuck. Power: 109 PS.
B-Klasse (OM640, 2005–2012) — Be Careful: Injectors Leaking — Tar Deposits and Pressure Loss, Timing Chain Rattles — Chain Tensioner Worn, EGR Valve Coked Up and Stuck. Power: 136–140 PS.
B-Klasse (OM651DE18, 2011–2013) — Be Careful: Piezo Injector Faults (220/250 CDI), Chain Tensioner Failure with Oil Loss, Particulate Filter Blockage with Short-Trip Use. Power: 109 PS.
B-Klasse (OM651DE18, 2011–2019) — Be Careful: Piezo Injector Faults (220/250 CDI), Chain Tensioner Failure with Oil Loss, Particulate Filter Blockage with Short-Trip Use. Power: 136 PS.
B-Klasse (OM651DE22, 2012–2014) — Stay Away!: Chain Tensioner Seal Leaking — Recall, Timing Chain Stretch (Simplex Chain), Piezo Injector Faults. Power: 163–177 PS.
B-Klasse (OM607, 2013–2019) — Be Careful: Timing belt instead of chain -- maintenance obligation, Timing belt interference engine -- total loss risk, Injector failure K9K base. Power: 90–95 PS.
B-Klasse (OM607, 2013–2019) — Be Careful: Timing belt instead of chain -- maintenance obligation, Timing belt interference engine -- total loss risk, Injector failure K9K base. Power: 109–116 PS.
B-Klasse (OM651DE22, 2014–2019) — Stay Away!: Chain Tensioner Seal Leaking — Recall, Timing Chain Stretch (Simplex Chain), Piezo Injector Faults. Power: 170–177 PS.
B-Klasse (OM608, 2018–2025) — Be Careful: Timing belt maintenance obligation, Timing belt change critical, Increased oil consumption / turbo shaft seal. Power: 109–116 PS.
B-Klasse (OM654, 2018–2025) — Be Careful: Rocker Arm and Camshaft Wear, Electric Coolant Pump Leaking — Recall, NOx Sensor Defective — AdBlue Fault and Start Inhibit. Power: 150 PS.
B-Klasse (OM654, 2018–2025) — Be Careful: Rocker Arm and Camshaft Wear, Electric Coolant Pump Leaking — Recall, NOx Sensor Defective — AdBlue Fault and Start Inhibit. Power: 190 PS.
B-Klasse (M266, 2005–2012) — Stay Away!: CVT Gearbox Loses Drive, Defective Gearbox Control Unit — Fault Codes P0706 / 0722, CVT Autotronic — Push-Belt and Sensor Wear. Power: 95 PS.
B-Klasse (M266, 2005–2012) — Stay Away!: CVT Gearbox Loses Drive, Defective Gearbox Control Unit — Fault Codes P0706 / 0722, CVT Autotronic — Push-Belt and Sensor Wear. Power: 116 PS.
B-Klasse (M266, 2005–2012) — Stay Away!: CVT Gearbox Loses Drive, Defective Gearbox Control Unit — Fault Codes P0706 / 0722, CVT Autotronic — Push-Belt and Sensor Wear. Power: 136 PS.
B-Klasse (M266, 2005–2012) — Stay Away!: CVT Gearbox Loses Drive, Defective Gearbox Control Unit — Fault Codes P0706 / 0722, CVT Autotronic — Push-Belt and Sensor Wear. Power: 193 PS.
B-Klasse (M270DE16, 2011–2019) — Be Careful: Camshaft Adjuster Solenoid Leaks — Oil in Wiring Harness, Recall — Camshaft Break (Production Defect 2015), Electric Thermostat Failure. Power: 122 PS.
B-Klasse (M270DE16, 2011–2019) — Be Careful: Camshaft Adjuster Solenoid Leaks — Oil in Wiring Harness, Recall — Camshaft Break (Production Defect 2015), Electric Thermostat Failure. Power: 156 PS.
B-Klasse (M270DE20, 2012–2019) — Be Careful: Camshaft Adjuster Solenoid Leaks — Oil in Wiring Harness, Recall — Camshaft Break (Production Defect 2015), Electric Thermostat Failure. Power: 184–190 PS.
B-Klasse (M270DE20, 2012–2019) — Be Careful: Camshaft Adjuster Solenoid Leaks — Oil in Wiring Harness, Recall — Camshaft Break (Production Defect 2015), Electric Thermostat Failure. Power: 211 PS.
B-Klasse (M270DE16, 2015–2019) — Be Careful: Camshaft Adjuster Solenoid Leaks — Oil in Wiring Harness, Recall — Camshaft Break (Production Defect 2015), Electric Thermostat Failure. Power: 102 PS.
B-Klasse (M260, 2018–2025) — Be Careful: Exhaust Valve Seat Insert Wear / Cylinder Head, Timing Chain Rattles on Cold Start, Wastegate Actuator Causes Boost Pressure Loss. Power: 184–190 PS.
B-Klasse (M260, 2018–2025) — Be Careful: Exhaust Valve Seat Insert Wear / Cylinder Head, Timing Chain Rattles on Cold Start, Wastegate Actuator Causes Boost Pressure Loss. Power: 224 PS.
What to watch out for with the Mercedes-Benz B-Klasse? See the detailed listing of all engine and vehicle weaknesses in the sections above.
Frequently Asked Questions
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Last updated: February 2026 · All information without guarantee