2.0 petrol (M266, A200)

2005–2011 · petrol · 2034cc · 136hp

Engine codes: M266

Maint. Sensitive

Reliability, common problems and owner reviews for the Mercedes Benz B-Class 2.0 petrol (M266, A200). Check this before you buy used.

The W245 shares the A-Class M266 petrols — simple, reliable engines, with the 2.0 (B200, incl. turbo) the better-matched choice for the taller, heavier B-Class body. Main niggles are ignition coils, plugs and the odd injector/sensor causing misfires and rough idle; prefer a 2008+ car with the early faults sorted. Note the 2.0 is 2,034cc (over 2.0L for tax in some countries). A dependable, low-drama people-carrier engine.

Same engine, other cars

This is the same physical engine (M266) sold under different names across brands. Reliability is broadly shared — cross-check these:

Mercedes-Benz A-Class W169— 2.0 petrol (M266, A200)136hp

Known Issues

Coil / plug / injector faultsrecurring

Misfire/rough-idle from coils, plugs, injectors.

Fix / Workaround: Replace as needed.

Repair cost: €80–€400

Over-2.0L taxminor

2034cc means higher tax bands in some countries — not a fault.

Fix / Workaround: Consider the 1.7 to stay under 2.0L.

Oil leaksminor

Engine oil seepage with age.

Fix / Workaround: Reseal as needed.

Repair cost: €100–€400

Year Cutoffs

2008: Before — Earlier cars — more early-life faults. After — 2008+ — many faults ironed out.

Mileage Thresholds

After 200,000 km: Dependable with maintenance.

Pre-Purchase Checklist

☐Scan for misfire codes
☐Note 2034cc tax implication
☐Turbo (A200T): check boost
☐Prefer 2.0 (B200) + 2008+
☐2034cc tax note

Frequently asked questions

Is the Mercedes Benz B-Class 2.0 petrol (M266, A200) reliable?

Maint. Sensitive — The W245 shares the A-Class M266 petrols — simple, reliable engines, with the 2.0 (B200, incl. turbo) the better-matched choice for the taller, heavier B-Class body. Main niggles are ignition coils, plugs and the odd injector/sensor causing misfires and rough idle; prefer a 2008+ car with the early faults sorted. Note the 2.0 is 2,034cc (over 2.0L for tax in some countries). A dependable, low-drama people-carrier engine.

What are the common problems and reviews for the Mercedes Benz B-Class 2.0 petrol (M266, A200)?

The most commonly reported problems: Coil / plug / injector faults, Over-2.0L tax, Oil leaks.

Is a used Mercedes Benz B-Class 2.0 petrol (M266, A200) worth buying?

Fine if serviced correctly — but it punishes neglect hard. History and the right consumables matter.