How much does a Mercedes W247 engine replacement cost in the UK?

A reconditioned W247 engine typically costs £1,800–£6,500 supply only, depending on the engine — the OM654 diesel sits at £2,800–£5,000, while the M282 petrol is cheaper at £1,800–£3,500. Fitting adds £650–£1,500 depending on the variant. Use our calculator for a personalised quote.

Which W247 engine is the most reliable?

The OM654 2.0-litre diesel (B200d/B220d) is the most reliable choice — it's Mercedes-developed, refined, and has a strong track record when serviced properly. The M260 2.0-litre petrol is also very dependable. Avoid the early OM608 1.5-litre diesel, which was phased out for good reason.

What are the common problems with the W247?

Early OM654 diesel engines (2018–2020) can suffer from cylinder head bolt failure, leading to coolant and oil leaks. The M282 petrol engine (Renault-sourced) may experience timing chain wear, and the M260 petrol can develop water pump and coolant leaks. The PHEV's battery and cooling system are also worth monitoring.

Is the Mercedes W247 reliable overall?

Yes — the W247 is generally well-regarded for reliability, especially with the OM654 diesel and M260 petrol. The Renault-sourced M282 and OM608 are less refined and have more reported issues, but they are still acceptable for lower-mileage use. Regular servicing is key to longevity.

Which W247 engine should I avoid?

The OM608 1.5-litre diesel (early B180d) — it's a Renault unit that suffered from injector and DPF problems and was quickly replaced by the OM654. Also, any early OM654 without documented head bolt inspection should be approached with caution.

How do I know if my W247 engine needs replacing?

Warning signs include persistent coolant loss (OM654), cold-start rattle (M282), overheating (M260), or a sudden drop in electric range (PHEV). If you notice any of these, have the car inspected immediately — ignoring them can lead to a full engine failure.

Is it worth replacing a Mercedes W247 engine, or should I scrap the car?

Depends on the car's value. A well-kept W247 is worth £12,000–£25,000, so a £2,800–£5,000 OM654 recon is only 11–42% of its value — well within our 70% Mercedes threshold, making replacement a sensible decision. On a high-mileage, lower-value example, the economics may shift — we always advise running the numbers.

How long do Mercedes W247 engines last?

The OM654 diesel can easily exceed 150,000 miles with regular servicing and early attention to the head bolt issue. The M260 petrol is similarly durable. The M282 and OM608 are less robust but can still reach 120,000 miles with meticulous maintenance.

What is the difference between the W247 and the previous W246?

The W247 is the third-generation B-Class, built on the newer MFA2 platform (shared with the A-Class and CLA). It introduced a completely new engine lineup, improved interior space, and updated technology. The W246 (2011–2018) used older OM651 and M270 engines and is covered on its own generation page.

How do I find my Mercedes W247 engine code?

The engine code is on the VIN plate (visible through the windscreen), on the vehicle documentation, and stamped on the engine block. For the W247, common codes are M282 (petrol), M260 (petrol), OM654 (diesel), and OM608 (early diesel). Tell us your variant and year, and we'll identify it — 25+ vetted Mercedes specialists will confirm it for free.

W247 Engine Replacement Cost UK

Name: Mercedes B-Class W247 UK Engine Enquiry Data 2025
Creator: MercedesEngines.uk

Mercedes B-Class W247 Engine Codes — The Complete Database

Every engine fitted to the W247 specifically — including the Renault-sourced M282 petrol, the Mercedes-developed M260, and the OM654 diesel family.

Engine CodeFamilyFuelDisplacementPowerYears (W247)Variants (badges)Reliability2025 EnquiriesAvg. Recon Cost

M282.914M282Petrol, turbo1.3L (1332cc)136–163 bhp2018–presentB180, B200★★★☆☆ [PROVISIONAL — inherited from Model Page; Renault-sourced]— (pattern data)£1,800–£3,500 [MB-QUOTE]

M260.920M260Petrol, turbo2.0L (1991cc)190–224 bhp2019–presentB220 4MATIC, B250 4MATIC★★★★☆ [PROVISIONAL — Mercedes-developed, well-regarded]— (pattern data)£2,500–£5,000 [MB-QUOTE]

OM654.920OM654Diesel, turbo2.0L (1950cc)116–190 bhp2018–presentB180d, B200d, B220d★★★★☆ [PROVISIONAL — inherited from Model Page; Mercedes-developed]520 [MB-VERIFIED]£2,800–£5,000 [MB-QUOTE]

OM608.915OM608Diesel, turbo1.5L (1461cc)116 bhp2018–2020 (phased out)B180d (early)★★★☆☆ [PROVISIONAL — Renault-sourced; phased out for OM654]— (pattern data)£1,800–£3,200 [MB-QUOTE]

M282 + electricM282 PHEVPetrol plug-in hybrid1.3L + electric motor218 bhp combined2020–presentB250e★★★★☆ [PROVISIONAL — M282 basis with electric assist]— (pattern data)£3,500–£6,500 [MB-QUOTE]

Engine CodeFuelPowerYearsReliabilityEnquiriesAvg. Recon Cost

M282.914M282Petrol, turbo136–163 bhp2018–present★★★☆☆ [PROVISIONAL — inherited from Model Page; Renault-sourced]— (pattern data)£1,800–£3,500 [MB-QUOTE]

M260.920M260Petrol, turbo190–224 bhp2019–present★★★★☆ [PROVISIONAL — Mercedes-developed, well-regarded]— (pattern data)£2,500–£5,000 [MB-QUOTE]

OM654.920OM654Diesel, turbo116–190 bhp2018–present★★★★☆ [PROVISIONAL — inherited from Model Page; Mercedes-developed]520 [MB-VERIFIED]£2,800–£5,000 [MB-QUOTE]

OM608.915OM608Diesel, turbo116 bhp2018–2020 (phased out)★★★☆☆ [PROVISIONAL — Renault-sourced; phased out for OM654]— (pattern data)£1,800–£3,200 [MB-QUOTE]

M282 + electricM282 PHEVPetrol plug-in hybrid218 bhp combined2020–present★★★★☆ [PROVISIONAL — M282 basis with electric assist]— (pattern data)£3,500–£6,500 [MB-QUOTE]

Overview

Mercedes B-Class W247 — Overview

The W247 is the third generation of the Mercedes-Benz B-Class, launched in December 2018 as the successor to the W246.

Built on the Mercedes MFA2 platform shared with the A-Class (W177) and CLA (C118), it introduced a new range of engines including the Renault-sourced M282 1.3-litre turbo petrol, the Mercedes-developed M260 2.0-litre turbo petrol, and the OM654 2.0-litre diesel family. A facelift arrived in October 2022 with mild-hybrid assistance across most variants.

Key Facts

Platform

Mercedes MFA2 (shared with A-Class W177, CLA C118, GLA H247)

Predecessor

W246 (2011–2018)

Successor

currently in production (no successor announced)

Sibling body styles in this generation

none (B-Class is standalone Sports Tourer)

Market Intelligence

The W247 B-Class generated 520+ real UK engine enquiries in 2025 [MB-VERIFIED], concentrated on the OM654 diesel as the most-requested powertrain.

Mercedes B-Class W247 — Overview

The W247 is the third generation of the Mercedes-Benz B-Class, launched in December 2018 as the successor to the W246.

Built on the Mercedes MFA2 platform shared with the A-Class (W177) and CLA (C118), it introduced a new range of engines including the Renault-sourced M282 1.3-litre turbo petrol, the Mercedes-developed M260 2.0-litre turbo petrol, and the OM654 2.0-litre diesel family. A facelift arrived in October 2022 with mild-hybrid assistance across most variants.

Key Facts

Platform

Mercedes MFA2 (shared with A-Class W177, CLA C118, GLA H247)

Predecessor

W246 (2011–2018)

Successor

currently in production (no successor announced)

Sibling body styles in this generation

none (B-Class is standalone Sports Tourer)

Market Intelligence

The W247 B-Class generated 520+ real UK engine enquiries in 2025 [MB-VERIFIED], concentrated on the OM654 diesel as the most-requested powertrain.

Best & Worst Engines

Best Diesel Overall

OM654.920 (B200d/B220d)

“Mercedes' own 2.0-litre diesel, introduced in 2016, replaces the ageing OM651 with a lighter, more efficient design. It's the pick of the W247 range — smooth, torquey, and backed by a strong reliability record.”

Who it's for: buyers who want a modern, efficient diesel without the Renault-sourced compromises.

Best Petrol Overall

M260.920 (B220/B250 4MATIC)

“Mercedes' own 2.0-litre turbo petrol, delivering 190–224 bhp with a responsive character and strong torque. It's the enthusiast's choice in the W247 range.”

Who it's for: buyers who want genuine performance from a compact MPV.

Highest Risk

M282.914 (B180/B200)

“The Renault-sourced 1.3-litre turbo petrol is a co-development engine (also used in Renault, Nissan, and Dacia models). While generally reliable, it lacks the refinement and long-term durability of Mercedes' own engines.”

Who it's for: buyers on a budget who prioritise low running costs over longevity.

Most Expensive Failure

OM654.920 (B220d) — cylinder head bolt issue

“A known issue on early OM654 engines where cylinder head bolts can break, leading to coolant and oil leaks. Repair costs can be significant if caught late.”

Who it's for: buyers who can afford the premium for the top diesel.

Best Value

OM654.920 (B200d)

“The mid-range diesel offers the best balance of performance (150 bhp), economy (up to 67 mpg), and reliability. It's the sweet spot in the W247 range.”

Who it's for: fleet buyers and high-mileage drivers.

Most Overlooked

M282 PHEV (B250e)

“The plug-in hybrid combines the 1.3-litre petrol with an electric motor for 218 bhp and impressive economy (up to 235 mpg). It's often overlooked in favour of the diesels but offers the lowest running costs for urban drivers.”

Who it's for: city drivers with access to charging.

Best Diesel Overall

OM654.920 (B200d/B220d)

“Mercedes' own 2.0-litre diesel, introduced in 2016, replaces the ageing OM651 with a lighter, more efficient design. It's the pick of the W247 range — smooth, torquey, and backed by a strong reliability record.”

Who it's for: buyers who want a modern, efficient diesel without the Renault-sourced compromises.

Best Petrol Overall

M260.920 (B220/B250 4MATIC)

“Mercedes' own 2.0-litre turbo petrol, delivering 190–224 bhp with a responsive character and strong torque. It's the enthusiast's choice in the W247 range.”

Who it's for: buyers who want genuine performance from a compact MPV.

Highest Risk

M282.914 (B180/B200)

“The Renault-sourced 1.3-litre turbo petrol is a co-development engine (also used in Renault, Nissan, and Dacia models). While generally reliable, it lacks the refinement and long-term durability of Mercedes' own engines.”

Who it's for: buyers on a budget who prioritise low running costs over longevity.

Most Expensive Failure

OM654.920 (B220d) — cylinder head bolt issue

“A known issue on early OM654 engines where cylinder head bolts can break, leading to coolant and oil leaks. Repair costs can be significant if caught late.”

Who it's for: buyers who can afford the premium for the top diesel.

Best Value

OM654.920 (B200d)

“The mid-range diesel offers the best balance of performance (150 bhp), economy (up to 67 mpg), and reliability. It's the sweet spot in the W247 range.”

Who it's for: fleet buyers and high-mileage drivers.

Most Overlooked

M282 PHEV (B250e)

“The plug-in hybrid combines the 1.3-litre petrol with an electric motor for 218 bhp and impressive economy (up to 235 mpg). It's often overlooked in favour of the diesels but offers the lowest running costs for urban drivers.”

Who it's for: city drivers with access to charging.

Mercedes B-Class W247 — Ownership Economics

EngineTypical MileageCommon Major FailureRepair Cost (Specialist)Replacement Cost (Recon)Ownership Verdict

M282.914 (B180/B200)40k–80kTiming chain wear, carbon buildup£500–£1,200£1,800–£3,500

Good Value — cheap to run, but watch for chain wear.

M260.920 (B220/B250)50k–90kCoolant leaks, water pump failure£400–£1,000£2,500–£5,000

Best Petrol — reliable and powerful.

OM654.920 (B200d)80k–150kCylinder head bolt issue (early), EGR cooler£600–£1,500£2,800–£5,000

Best Diesel — efficient and durable.

OM654.920 (B220d)80k–150kCylinder head bolt issue (early), turbo wear£800–£2,000£3,000–£5,500

Most Powerful — premium diesel, premium costs.

OM608.915 (B180d early)60k–100kInjector failure, DPF clogging£500–£1,200£1,800–£3,200

Avoid — Renault-sourced, phased out for good reason.

M282 PHEV (B250e)30k–60kBattery degradation, cooling system£1,000–£2,500£3,500–£6,500

Urban Hero — low running costs if charged regularly.

EngineTypical MileageCommon Major FailureRepair Cost (Specialist)Replacement Cost (Recon)Ownership Verdict

M282.914 (B180/B200)40k–80kTiming chain wear, carbon buildup£500–£1,200£1,800–£3,500

Good Value — cheap to run, but watch for chain wear.

M260.920 (B220/B250)50k–90kCoolant leaks, water pump failure£400–£1,000£2,500–£5,000

Best Petrol — reliable and powerful.

OM654.920 (B200d)80k–150kCylinder head bolt issue (early), EGR cooler£600–£1,500£2,800–£5,000

Best Diesel — efficient and durable.

OM654.920 (B220d)80k–150kCylinder head bolt issue (early), turbo wear£800–£2,000£3,000–£5,500

Most Powerful — premium diesel, premium costs.

OM608.915 (B180d early)60k–100kInjector failure, DPF clogging£500–£1,200£1,800–£3,200

Avoid — Renault-sourced, phased out for good reason.

M282 PHEV (B250e)30k–60kBattery degradation, cooling system£1,000–£2,500£3,500–£6,500

Urban Hero — low running costs if charged regularly.

The W247 rule

A £2,800–£5,000 OM654 recon against a £12,000–£25,000 W247 sits at 11–42% of the car's value — comfortably within our 70% Mercedes threshold. On a higher-mileage B180d with the OM608, the same maths looks less favourable — we'll honestly tell you to consider the OM654 variant instead. Value the car first, then the engine.

Key Takeaways

Which W247 Costs Least To Own?
B200d (OM654) — best balance of economy and reliability.
Which W247 Costs Most To Own?
B250e (PHEV) — battery and cooling system costs add up.
Which W247 Is Best Value?
B200d (OM654) — the sweet spot in the range.

Common Problems

01

OM654

Cylinder Head Bolt Failure (early units)

Affected models:

B180d, B200d, B220d (2018–2020)

OM654 Cylinder Head Bolt Failure (early units)

Typical failure mileage:

40,000–80,000 miles

Root cause:

A manufacturing issue on early OM654 engines where cylinder head bolts can break, leading to coolant and oil leaks. Mercedes issued a technical service bulletin and revised the bolt specification.

Tiered Cost Table

Our Recommendation

If your W247 diesel was built before mid-2020, have the cylinder head bolts inspected at the next service — a £600–£1,200 preventative repair is far cheaper than the £2,800–£5,000 replacement that follows a full failure.

Compare OM654 engine prices for your W247 diesel

02

M282

Timing Chain Wear (Renault-sourced petrol)

Affected models:

B180, B200 (all years)

M282 Timing Chain Wear (Renault-sourced petrol)

Typical failure mileage:

60,000–100,000 miles

Root cause:

The M282 is a co-development engine with Renault/Nissan. While generally reliable, the timing chain tensioner can wear, leading to rattling on cold start and, if ignored, catastrophic failure.

Tiered Cost Table

Our Recommendation

At the first sign of cold-start rattle, get the timing chain inspected immediately — a £500–£1,200 preventative repair is dramatically cheaper than the £1,800–£3,500 replacement that follows if ignored.

Compare M282 engine prices for your W247 petrol

03

M260

Water Pump & Coolant Leaks

Affected models:

B220 4MATIC, B250 4MATIC

Typical failure mileage:

50,000–90,000 miles

Root cause:

The M260's water pump and plastic coolant fittings can degrade over time, leading to coolant loss and potential overheating.

Tiered Cost Table

Our Recommendation

Replace the water pump proactively at 60,000 miles — a £400–£800 repair is cheap insurance against a £2,500–£4,000 engine replacement.

Compare M260 engine prices for your W247 4MATIC

W247 Engine Replacement Costs — By Engine and Condition

VariantEngine CodeUsed (Supply)Reconditioned (Supply)Rebuilt (Supply)Labour Hours

B180 / B200M282.914£800–£1,800£1,800–£3,500£2,800–£4,5008–12 hrs

B220 4MATIC / B250 4MATICM260.920£1,200–£2,800£2,500–£5,000£4,000–£6,50010–14 hrs

B180d (early)OM608.915£800–£1,600£1,800–£3,200£2,500–£4,2008–12 hrs

B180d (late) / B200dOM654.920£1,500–£2,800£2,800–£5,000£4,000–£6,50010–14 hrs

B220dOM654.920£1,800–£3,200£3,000–£5,500£4,500–£7,00010–14 hrs

B250eM282 + electric£2,000–£3,500£3,500–£6,500£5,000–£8,00012–16 hrs

No Generation variance from the Model Page's baseline figures — the W247 shares its MFA2 platform with the A-Class and CLA, so engine-bay access and labour times are consistent across the range. Costs are inherited directly per the Authority Model, with no divergence note required.

Core Variants

Diesel Variants

B180dB200dB220d

Petrol Variants

B180B200B220 4MATICB250 4MATIC

Scope note: All variants listed are W247 Sports Tourer only. The W247 shares its engine range with the A-Class (W177) and CLA (C118), but each has its own Generation Page for body-specific details.

Core Variants

Diesel Variants

B180dB200dB220d

Petrol Variants

B180B200B220 4MATICB250 4MATIC

Scope note: All variants listed are W247 Sports Tourer only. The W247 shares its engine range with the A-Class (W177) and CLA (C118), but each has its own Generation Page for body-specific details.

Market Intelligence

Most Requested E90 Engines (2025)

1.1. OM654 (2.0 diesel) — most‑requested across the Mercedes range [MB‑VERIFIED]
2.2. M260 (2.0 petrol) — strong demand for performance variants
3.3. M282 (1.3 petrol) — popular entry‑level choice

Most Requested E90 Variants

1.1. B200d
2.2. B200
3.3. B250e (PHEV)

Average E90 Replacement Cost

£1,800–£6,500 supply only [MB‑QUOTE]

Most Common E90 Failures

1.1. OM654 cylinder head bolt failure (early cars)
2.2. M282 timing chain wear
3.3. M260 water pump leaks

Live Feed

VehicleLocationIssueEnquiries

Mercedes B200d W247 (OM654)

London

Coolant loss, suspected head bolt issue

5

enquiries

Mercedes B200 W247 (M282)

Birmingham

Cold‑start rattle

3

enquiries

Mercedes B250e W247 (PHEV)

Manchester

Electric range drop, battery cooling fault

2

enquiries

Updated Monthly

FAQ

BMW 3 Series E90 rear three-quarter view

Why UK Mercedes W247 Owners Trust MercedesEngines.uk

Trusted W247 Engine Suppliers
every garage and engine rebuilder in our network is vetted, rated, and reviewed by real Mercedes owners, as part of the Engine Finders network.
Compare W247 Engine Replacement Companies
see prices, warranty terms, and supply & fit options side‑by‑side before you commit.
UK Engine Replacement Services for W247
covering every variant from B180 to B250e, with supply‑only or full supply & fit available nationwide.

Find the best Mercedes W247 engine replacement UK drivers rely on. Compare real prices from trusted specialists on EnginesMarket today and get back on the road with confidence.

Compare Mercedes B‑Class W247 Engine Prices on EnginesMarket

Why UK Mercedes W247 Owners Trust MercedesEngines.uk

Trusted W247 Engine Suppliers
every garage and engine rebuilder in our network is vetted, rated, and reviewed by real Mercedes owners, as part of the Engine Finders network.
Compare W247 Engine Replacement Companies
see prices, warranty terms, and supply & fit options side‑by‑side before you commit.
UK Engine Replacement Services for W247
covering every variant from B180 to B250e, with supply‑only or full supply & fit available nationwide.

Find the best Mercedes W247 engine replacement UK drivers rely on. Compare real prices from trusted specialists on EnginesMarket today and get back on the road with confidence.

Compare Mercedes B‑Class W247 Engine Prices on EnginesMarket

Mercedes B-Class W247 Engines — The Complete UK Guide

Mercedes B-Class W247 Engine Codes — The Complete Database

Mercedes B-Class W247 — Overview

Mercedes B-Class W247 — Overview

Best & Worst Engines

Mercedes B-Class W247 — Ownership Economics

Common Problems

W247 Engine Replacement Costs — By Engine and Condition

Core Variants

Core Variants

Market Intelligence

FAQ

Why UK Mercedes W247 Owners Trust MercedesEngines.uk

Why UK Mercedes W247 Owners Trust MercedesEngines.uk