Mercedes‑Benz B‑Class B180 / B200 Petrol Engine Replacement — Compare Prices & Get Quotes
Get quotes today from trusted UK Mercedes‑Benz B180 / B200 specialists. Compare reconditioned, rebuilt and used 1.7-litre and 1.6-litre turbo petrol engines — M266 and M270 variants across the W245 and W246 generations — supply & fit available nationwide.
The B‑CLASS B180 / B200 PETROL THROUGH TIME — Era Map
Four generations. Four eras. One guide to reliability, costs and what really matters.
Era Note
1.7L (B180: 116 bhp) / 2.0L (B200: 134 bhp); timing chain stretch and valve coking are the main concerns
Why use this era map?
This table is the single source every other section on this page matches — Sections 2, 4 and 6 reference it rather than restating conflicting figures.
Mercedes‑Benz B‑Class B180 / B200 Petrol Engine Replacement Costs
Figures above reflect current B180/B200 petrol replacement costs. The M270 variant typically sits at the higher end of the range. See the Era Map above for generation‑specific pricing.
Labour estimate: Fitting a B‑Class B180/B200 petrol engine typically takes 10–14 hours at £65–£95/hr (independent) or £110–£160/hr (London/SE dealer).
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B‑Class B180 / B200 Petrol — Repair, Buy, or Replace?
Every 320d has a story. Make the right call with clear data, real-world costs, and honest guidance from UK specialists.
Can It Be Repaired?
Buying This B180 / B200 Petrol? Check These First
Buy If
- W246 (2011–2018) with documented timing chain inspection or replacement
- W245 with full service history and regular oil changes
- No cold‑start rattling (timing chain health — M270)
- No rough idle or warning lights (camshaft actuator health — M270)
- Evidence of regular longer runs (prevents carbon buildup on direct‑injection engines)
Avoid If
- W246 with cold‑start rattle and no chain history — assume it's overdue
- W245 with no service history — the M266 is sensitive to oil quality
- Engine warning light with no diagnosis — may indicate timing, camshaft or sensor problems
- Short‑journey ownership history — carbon buildup likely on direct‑injection M270
Closing Verdict
The B‑Class B180 and B200 petrol are Mercedes‑Benz's compact MPV petrol offerings across two generations. The W245 (2005–2011) uses the M266 — a naturally aspirated engine that suffers from timing chain stretch and valve coking. The W246 (2011–2018) uses the M270 — a 1.6‑litre turbocharged direct‑injection engine that offers significantly more power (120–156 bhp) and efficiency. The M270 has well‑documented issues: timing chain wear at around 80,000 miles, camshaft actuator and tone ring failure, and thermostat failure. With typical B‑Class values ranging from £3,000 (W245) to £12,000+ (W246), an engine replacement is a significant investment — a well‑maintained W246 M270 with documented timing chain history is the safest choice.
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Buying Checklist
Before you buy a used Mercedes‑Benz B‑Class B180 / B200 Petrol (or before you commit to an engine replacement), check these:
Cold Start — Listen for rattling or clattering (timing chain wear warning — M270 particularly) — see the map above
Service History — Including which engine era (<a href='https://mercedesengines.uk/engine/m266'>M266</a> or M270) and oil‑change discipline
Timing Chain — For M270 (W246): check for any chain work or cold‑start rattle
Camshaft Actuator — Check for smooth idle and acceleration; any roughness may indicate actuator issues
Thermostat — Check warm‑up time; slow warm‑up may indicate thermostat failure
Carbon Buildup — On M270 (direct‑injection), listen for rough idle; may require walnut blasting
Engine Warning Light — Have codes read; unresolved issues may indicate timing, camshaft or sensor problems
MOT History — Check for emissions‑related failures
Buy smart. Drive with confidence.
A few checks today can save thousands tomorrow. Use this checklist to avoid the most common 320d pitfalls.
Engine Codes
This table's rows match Section 1B's Era Map exactly.
M266
Technical Specs
M266 — W245 generation→ Compare B180 / B200 petrol engine prices for your B‑Class
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Market Intelligence
Most Common Failure
Timing chain wear (M270) and camshaft actuator failure — the most frequent B180/B200 petrol enquiries
Average Enquiry Mileage
60,000
–90,000 miles
[PATTERN DATA]
Average Replacement Cost
£4,000
–£5,000 reconditioned, supply only
[PLACEHOLDER]
Most Requested Engine Code
M270
[PATTERN DATA]
Peak Enquiry Season
Winter — cold starts expose timing chain wear
[PATTERN DATA]
Regional Demand
PATTERN DATA
Regional Demand Breakdown
Frequently Asked Questions
All prices are indicative UK market ranges based on historical quote data from our network of engine specialists. Actual costs vary by variant, engine condition, damage severity and workshop location. Use our free comparison tool to get tailored quotes. Every engine supplied through EnginesMarket carries a minimum 12‑month unlimited‑mileage warranty — always confirm terms with your chosen supplier.
Why UK Mercedes‑Benz B180 / B200 Petrol Owners Trust MercedesEngine.uk
Trusted B180 / B200 Petrol Engine Suppliers
every garage and engine rebuilder in our network is vetted, rated and reviewed by real B180 and B200 owners, as part of the Engine Finders network, across every generation — M266 and M270 — covering the W245 and W246 chassis.
Compare B180 / B200 Petrol Engine Replacement Companies
see prices, warranty terms and supply & fit options side‑by‑side before you commit. We cover the 1.7L, 2.0L and 1.6L turbo petrol engines specifically, with specialists who understand the M270 timing chain vulnerabilities, camshaft actuator issues, and the unique requirements of the B‑Class.
UK Engine Replacement Services for B180 / B200 Petrol
supply‑only or full supply & fit available nationwide, covering every generation of this badge since 2005, with a 12‑month warranty as standard across our network.
Find the best Mercedes‑Benz B180 / B200 petrol engine replacement UK owners rely on. Compare prices from trusted specialists on EnginesMarket today and get your B‑Class back on the road with confidence.
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No hidden fees
No Obligation
Get quotes with zero pressure
UK Specialists
20+ vetted experts
12-Month Warranty
As standard
Nationwide Delivery
Supply & fit available