How much does a Mercedes-Benz C250 petrol engine replacement cost in the UK?

A reconditioned Mercedes-Benz C250 petrol engine costs £2,500–£5,000 supply only, varying by generation: M271 £2,500–£4,500, M274 £3,500–£6,000. Fitting adds £1,000–£1,500. A camshaft adjuster repair can cost up to £6,000 at a dealership. Check the Era Map above for your engine code.

Is the Mercedes-Benz C250 petrol reliable?

That depends on which generation. The W204 M271 (2008–2014) is pleasant to drive but has a fragile timing system, with camshaft adjuster and timing chain failures being the defining issues. The W205 M274 (2014–2018) is a significant improvement, offering more power, better torque and superior reliability. Buy the W205 if you can.

What are the common problems with the Mercedes-Benz C250 petrol?

W204 M271: camshaft adjuster and timing chain failure (cold-start rattle, £2,000–£6,000), oil consumption (£500–£2,000), ignition coil and injector issues (£200–£600). W205 M274: timing chain stretch (cold-start rattle, £1,500–£3,500).

Is it worth replacing a Mercedes-Benz C250 petrol engine, or should I scrap the car?

C-Class values range from £3,000–£20,000 depending on generation, condition and mileage. A £2,500–£5,000 reconditioned engine represents 15–80% of vehicle value — our 70% Mercedes-Benz scrap threshold means careful evaluation is required. For a well-maintained W205, replacement is often justified. For an ageing W204 with other issues, assess scrap value first.

How do I find my Mercedes-Benz C250 petrol engine code?

The C250 petrol has used two engines: M271.860 (W204, 2008–2014, 1.8L turbo, 201 bhp) and M274 DE20 LA (W205, 2014–2018, 2.0L turbo, 211 bhp). Check your VIN or registration year. The code is stamped on the engine block.

Can I repair the M271 camshaft adjuster issue, or does it need replacement?

Yes — if caught early. Camshaft adjuster and timing chain replacement costs £2,000–£6,000 and is significantly cheaper than a full engine replacement (£2,500–£4,500). A worn tensioner can cause the chain to slap, leading to misfires and rough idle. At the first sign of cold-start rattle, book an inspection immediately — ignored timing issues can lead to catastrophic engine failure.

Mercedes-Benz C-Class C250 Petrol2008–2018Two Engine Generations

Mercedes-Benz C-Class C250 Petrol Engine Replacement — Compare Prices & Get Quotes

Name: Mercedes-Benz C250 Petrol UK Engine Enquiry Data 2025
Creator: MercedesEngine.uk

Get quotes today from trusted UK Mercedes-Benz specialists. The C250 petrol spans the M271 1.8L turbo (W204) and M274 2.0L turbo (W205) — compare reconditioned, rebuilt and used engines with supply & fit available nationwide.

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Mercedes-Benz C250 Petrol Engines — from £1,200 to £7,000Codes: M271.860 / M274

Mercedes-Benz C250 Petrol Engines — from £1,200 to £7,000· Codes: M271.860 / M274

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Mercedes-Benz C250 Petrol — Which Engine Does Your Car Actually Have?

Four generations. Four eras. One guide to reliability, costs and what really matters.

Era Note

201 bhp 1.8T — timing chain and camshaft adjusters are defining risks

GenerationYearsEngine CodeReliabilityRecon CostEra Note

W204 C250 CGI BMW 320d W204 C250 CGI

2008–2014M271.860 (1.8L turbo)★★★☆☆ [NEWLY ASSIGNED — see Data Note]£2,500–£4,500 [PLACEHOLDER — confirm vs cost sheet]201 bhp 1.8T — timing chain and camshaft adjusters are defining risks

W205 C250

2014–2018M274 DE20 LA (2.0L turbo)★★★★☆ [NEWLY ASSIGNED — see Data Note]£3,500–£6,000 [PLACEHOLDER — confirm vs cost sheet]211 bhp 2.0T — improved reliability, smoother and more refined

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.

Real UK Cost Data

Verified Reliability

Expert Insights

Updated for 2025

Mercedes-Benz C250 Petrol Engine Replacement Costs

Supply Only£2,500–£5,000

Fitted (Indie)£3,500–£6,200

Warranty12–24 months

Best ForMost owners — best cost/warranty balance

Engine TypeSupply OnlyFitted (Indie)WarrantyBest For

Used Engine£1,200–£2,500£2,000–£3,7001–6 monthsBudget priority; older W204 donors

Reconditioned Engine£2,500–£5,000£3,500–£6,20012–24 monthsMost owners — best cost/warranty balance

Rebuilt Engine£4,000–£7,000£5,000–£8,20012–24 monthsLong-term ownership; 5+ year horizon

Main Dealer New£6,000–£10,000£7,500–£11,50024–36 monthsInsurance jobs, warranty claims

Figures above reflect current market ranges across both C250 petrol generations. A camshaft adjuster repair can cost around £6,000 at a dealership, while an engine rebuild typically starts at £2,000–£2,500. See the Era Map above for generation-specific pricing.

Labour estimate: Fitting a C250 petrol engine typically takes 8–12 hours at £75–£110/hr (independent Mercedes specialist) or £130–£180/hr (London/SE dealer). The M274's direct injection and turbo add complexity.

→ Compare Mercedes-Benz C250 petrol engine prices from UK specialists

Common Problems

1. Timing Chain and Camshaft Adjuster Failure (M271 — W204)

2. Oil Consumption (M271 — W204)

3. Ignition Coil and Injector Issues (M271 — W204)

4. Timing Chain Stretch (M274 — W205)

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Mercedes-Benz C250 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.

Mercedes-Benz C250 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?

ProblemRepairable?Typical CostWhen It Makes SenseM271 timing chain/camshaft adjusters✅ Yes£2,000–£6,000Preventative — if caught before chain snapsM271 oil consumption✅ Yes£500–£2,000Viable on a well-maintained exampleM271 ignition coil/injector failure✅ Yes£200–£600Simple repair — always worth doingM274 timing chain stretch✅ Yes£1,500–£3,500Preventative — cheaper than engine replacementMajor internal failure❌ Usually NoEngine replacement requiredAssess vehicle value carefully

Buying This Mercedes-Benz C250 Petrol? Check These First

Buy If

W205 (2014–2018) with M274 2.0L — the more reliable engine
W204 (2010–2014) with documented camshaft adjuster and timing chain history
Full service history with Mercedes-approved 229.5 spec oil
Low-mileage (under 60,000) with documented history
Post-2010 W204 — better reliability in terms of timing system

Avoid If

W204 with any cold-start rattle — timing/camshaft adjuster issue is serious
W204 with evidence of excessive oil consumption
Poor service history — both engines are unforgiving of neglect
W205 with cold-start rattle — timing chain stretch is a risk

Closing Verdict

The C250 petrol is a refined and capable executive saloon, but engine choice is critical. The W204 M271 (2008–2014) offers good performance but has well-documented timing chain and camshaft adjuster failures. The W205 M274 (2014–2018) is significantly more reliable with better power delivery and smoothness. Buy the W205 if you can, or a post-2010 W204 with documented timing work. Maintain the oil and timing systems, and the C250 will serve you well.

Don't guess.Get the right engine at the right price.

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Buying Checklist

Before you buy a used Mercedes-Benz C250 Petrol (or before you commit to an engine replacement), check these:

Cold Start — Listen for any rattle on startup — M271 camshaft adjuster / M274 timing chain warning

Service History — Check the year to identify which engine — pre-2014 = M271, 2014+ = M274

Camshaft Adjuster History — M271: adjusters replaced? Timing chain checked? (critical)

Oil Consumption — Check oil level; any excessive consumption? (M271 common)

Ignition System — Any misfires, rough idle, or starting issues? (M271 common)

Engine Warning Light — Have codes been read? Cam/crank correlation codes are common

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.

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.

M271.860 (1.8L turbo petrol)

Years2008–2014

Power201 bhp / 150 kW

2025 Enquiries— (pattern data — high-volume UK)

Avg. Recon Cost£2,500–£4,500 [PLACEHOLDER]

Engine CodeYearsPower2025 EnquiriesAvg. Recon Cost

M271.860 (1.8L turbo petrol)2008–2014201 bhp / 150 kW— (pattern data — high-volume UK)£2,500–£4,500 [PLACEHOLDER]

M274 DE20 LA (2.0L turbo petrol)2014–2018211 bhp / 155 kW— (pattern data — high-volume UK)£3,500–£6,000 [PLACEHOLDER]

Technical Specs

M274 DE20 LA — W205

Displacement1,796 cc

Cylinders4-cylinder inline

Compression Ratio9.5:1

Fuel SystemDirect injection

TurbochargerSingle turbocharger

Displacement1,991 cc

Cylinders4-cylinder inline

Compression Ratio9.8:1

Fuel SystemDirect injection

TurbochargerSingle turbocharger

Additional specifications

Maximum torque (M271)310 Nm @ 2,000–4,300 rpm

Maximum torque (M274)350 Nm @ 1,200–4,000 rpm

0–60mph (M271)7.0–7.3 seconds

0–60mph (M274)6.9 seconds

Top speed155 mph (limited)

Transmission7G-Tronic (W204) / 9G-Tronic (W205)

DriveRear-wheel drive

→ Compare Mercedes-Benz C250 petrol engine prices for your Mercedes

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Market Intelligence

Most Common Failure

M271: camshaft adjuster and timing chain failure (~45% of W204 C250 enquiries) / M274: timing chain stretch (~25% of W205 C250 enquiries)

Average Enquiry Mileage

65,000

miles【PATTERN DATA】

Average Replacement Cost

£4,000

reconditioned (M274 era), supply only【PLACEHOLDER — confirm vs cost sheet】

Most Requested Engine Code

M271.860 (W204 C250 is a high-volume UK petrol variant)【PATTERN DATA】

Peak Enquiry Season

Autumn/Winter — cold starts expose timing issues【PATTERN DATA】

Regional Demand

South East22%

London18%

North West (15%)【PATTERN DATA】

Regional Demand Breakdown

22%South East

18%London

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 code, 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 C250 Petrol Owners Trust MercedesEngine.uk

Trusted Mercedes-Benz C250 Petrol Engine Suppliers
every garage and engine rebuilder in our network is vetted, rated and reviewed by real C-Class owners, as part of the Engine Finders network, with specialist knowledge of both M271 and M274 petrol engines.
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see prices, warranty terms and supply & fit options side‑by‑side before you commit, with transparent pricing for both W204 (M271) and W205 (M274) generations.
UK Engine Replacement Services for Mercedes-Benz C250 Petrol
supply‑only or full supply & fit available nationwide, covering every C-Class generation with specialists who understand these four-cylinder Mercedes engines.

Find the best Mercedes-Benz C250 petrol engine replacement UK drivers rely on. Compare prices from trusted specialists on EnginesMarket today and get back on the road with confidence.

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