How much does a Mercedes A-Class W169 engine replacement cost in the UK?

A reconditioned W169 engine typically costs £900–£3,800 supply only [MB-QUOTE], depending on engine — the A170 sits at £1,200–£2,200. Fitting adds 6–12 hours labour at specialist rates due to the sandwich‑concept design. Use our calculator for a personalised figure.

Which Mercedes W169 engine is the most reliable?

The OM640.941 (A180 CDI) — 109 bhp, 250 Nm of torque, simple common‑rail injection, and no catastrophic failure modes. The A170 (M266.940) is the best naturally aspirated petrol option — smooth, reliable, and cheap to maintain.

What are the common problems with the Mercedes A-Class W169?

Coil pack failure on M266 petrols, injector wear and DPF clogging on OM640 diesels, and — chassis‑specific — the sandwich‑concept labour premium that makes every repair more expensive than a conventional hatchback. The A200 Turbo's turbocharger and intercooler add further complexity.

Is the Mercedes A-Class W169 reliable?

Yes — both engine families are simple, low‑stress designs. The petrol M266 is particularly robust (no turbo, no direct injection), while the OM640 diesel is durable provided it gets regular motorway runs to clear the DPF. The W169's real reliability challenge is the cost of labour, not the engines themselves.

Which Mercedes W169 engine should I avoid?

No engine outright — but an A200 Turbo (M266.980) without documented turbo service history is the one we'd approach cautiously, given its rarity (2% of production) and specialist parts requirements. A neglected A200 CDI without injector history is the second.

How do I know if my W169 engine needs replacing?

Misfire or engine management light on petrol M266 = coil pack failure; rough idle or starting issues on diesel OM640 = injector wear; loss of power or DPF warning = DPF clogging from urban use. Use our diagnostic calculator for a personalised assessment.

Is it worth replacing a Mercedes A-Class W169 engine, or should I scrap the car?

Depends on the car's value. Against a well‑kept £5,000 W169, a £1,800–£3,200 OM640 recon is 36–64% of the car's value — safe. Against a tired £2,500 example, the same recon is 72–128% — walk away. Our 70% Mercedes threshold is the line.

How long do Mercedes W169 engines last?

The OM640 diesel can exceed 200,000 miles with regular servicing and motorway usage. The M266 petrols are similarly durable — 150,000–200,000 miles is achievable with coil pack replacements every 60,000–100,000 miles as the only routine wear item.

What is the difference between the W169 and the C169 A-Class?

Both share the second‑generation A‑Class platform and all engines. The W169 is the 5‑door hatchback (this page), the C169 is the 3‑door Coupé. Costs vary slightly due to body‑specific parts and the C169's sportier suspension tuning. See the C169 page for specifics.

How do I find my Mercedes W169 engine code?

Listed on the VIN plate (visible through the windscreen) and vehicle documentation; also stamped on the engine block (visible from below, though the W169's sandwich‑concept design makes access tight). Tell us your variant and registration year and we'll identify it — 25+ vetted Mercedes specialists will confirm it for free.

W169 Engine Replacement Cost UK

Name: Mercedes A-Class W169 UK Engine Enquiry Data 2025
Creator: MercedesEngines.uk

Mercedes A-Class W169 Engine Codes — The Complete Database

Every engine fitted to the W169 hatchback — from the entry‑level 1.5‑litre petrol to the 193bhp A200 Turbo, plus the OM640 diesel family that powered the majority of UK fleet sales.

Engine CodeFamilyFuelDisplacementPowerYears (W169)Variants (badges)Reliability2025 EnquiriesAvg. Recon Cost

M266.920M266Petrol1.5L (1498 cc)95 bhp (70 kW)2004–2012A150, A160★★★☆☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£900–£1,800 [MB-QUOTE]

M266.940M266Petrol1.7L (1699 cc)116 bhp (85 kW)2004–2012A170★★★★☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£1,200–£2,200 [MB-QUOTE]

M266.960M266Petrol2.0L (2034 cc)136 bhp (100 kW)2004–2012A200★★★★☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£1,500–£2,800 [MB-QUOTE]

M266.980M266 TurboPetrol, turbo2.0L (2034 cc)193 bhp (142 kW)2005–2012A200 Turbo★★★☆☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£2,000–£3,800 [MB-QUOTE]

OM640.940OM640Diesel2.0L (1991 cc)82 bhp (60 kW)2004–2012A160 CDI★★★★☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£1,500–£2,800 [MB-QUOTE]

OM640.941OM640Diesel2.0L (1991 cc)109 bhp (80 kW)2004–2012A180 CDI★★★★☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£1,800–£3,200 [MB-QUOTE]

OM640.942OM640Diesel2.0L (1991 cc)140 bhp (103 kW)2004–2012A200 CDI★★★★☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£2,000–£3,800 [MB-QUOTE]

Engine CodeFuelPowerYearsReliabilityEnquiriesAvg. Recon Cost

M266.920M266Petrol95 bhp (70 kW)2004–2012★★★☆☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£900–£1,800 [MB-QUOTE]

M266.940M266Petrol116 bhp (85 kW)2004–2012★★★★☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£1,200–£2,200 [MB-QUOTE]

M266.960M266Petrol136 bhp (100 kW)2004–2012★★★★☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£1,500–£2,800 [MB-QUOTE]

M266.980M266 TurboPetrol, turbo193 bhp (142 kW)2005–2012★★★☆☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£2,000–£3,800 [MB-QUOTE]

OM640.940OM640Diesel82 bhp (60 kW)2004–2012★★★★☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£1,500–£2,800 [MB-QUOTE]

OM640.941OM640Diesel109 bhp (80 kW)2004–2012★★★★☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£1,800–£3,200 [MB-QUOTE]

OM640.942OM640Diesel140 bhp (103 kW)2004–2012★★★★☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£2,000–£3,800 [MB-QUOTE]

Overview

Mercedes A-Class W169 — Overview

The W169 is the second generation of the Mercedes‑Benz A‑Class, launched in September 2004 as the successor to the W168.

It introduced a longer wheelbase, a choice of five‑door hatchback (W169) or three‑door Coupé (C169) body styles, and a completely new engine line‑up: the M266 petrol family (1.5L, 1.7L and 2.0L) and the OM640 turbodiesel family (2.0L in three power levels). The W169 retained Mercedes' sandwich‑concept safety architecture, with the engine and transmission inclined at up to 59° — a design that improved crash safety but made every repair a specialist job. A mid‑cycle facelift in 2008 brought revised styling, updated Euro 5 emissions compliance on later models, and the discontinuation of some early‑spec variants.

Key Facts

Platform

Mercedes W169 (shared with C169 three‑door Coupé)

Predecessor

W168

Successor

W176

Sibling body styles in this generation

C169 (three‑door Coupé)

Market Intelligence

The A‑Class W169 generated an estimated 250+ UK engine enquiries in 2025 [MB-VERIFIED — PLACEHOLDER], concentrated on the A180 CDI and A200 CDI diesels as these ageing hatchbacks exit affordable‑warranty age and enter high‑mileage ownership.

Mercedes A-Class W169 — Overview

The W169 is the second generation of the Mercedes‑Benz A‑Class, launched in September 2004 as the successor to the W168.

It introduced a longer wheelbase, a choice of five‑door hatchback (W169) or three‑door Coupé (C169) body styles, and a completely new engine line‑up: the M266 petrol family (1.5L, 1.7L and 2.0L) and the OM640 turbodiesel family (2.0L in three power levels). The W169 retained Mercedes' sandwich‑concept safety architecture, with the engine and transmission inclined at up to 59° — a design that improved crash safety but made every repair a specialist job. A mid‑cycle facelift in 2008 brought revised styling, updated Euro 5 emissions compliance on later models, and the discontinuation of some early‑spec variants.

Key Facts

Platform

Mercedes W169 (shared with C169 three‑door Coupé)

Predecessor

W168

Successor

W176

Sibling body styles in this generation

C169 (three‑door Coupé)

Market Intelligence

The A‑Class W169 generated an estimated 250+ UK engine enquiries in 2025 [MB-VERIFIED — PLACEHOLDER], concentrated on the A180 CDI and A200 CDI diesels as these ageing hatchbacks exit affordable‑warranty age and enter high‑mileage ownership.

Best & Worst Engines

Best Diesel Overall

OM640.941 (A180 CDI)

“The sweet spot of the OM640 diesel family — 109 bhp, 250 Nm of torque from just 1,600 rpm, and no catastrophic failure modes. Simple common‑rail injection, robust chain‑driven valvetrain, and the same Euro 4 compliance that kept it in production for the full W169 lifecycle.”

Who it's for: buyers who want diesel economy without the complexity of the A200 CDI's higher boost or the entry‑level A160 CDI's sluggishness.

Best Petrol Overall

M266.940 (A170)

“The 1.7‑litre naturally aspirated petrol — 116 bhp, simple SOHC 8‑valve design, no turbo, no direct injection. It's the most honest engine in the W169 range: smooth, reliable, and cheap to maintain.”

Who it's for: buyers who want a straightforward petrol hatchback without turbo or diesel complications.

Highest Risk

M266.980 (A200 Turbo)

“The only forced‑induction petrol in the W169 range. 193 bhp from a 2.0‑litre turbo sounds appealing, but the added complexity — turbocharger, intercooler, higher boost — introduces failure modes the naturally aspirated M266s simply don't have. Specialist parts are harder to source, and the engine was only fitted to about 2% of W169s.”

Who it's for: enthusiasts who understand that 193 bhp in a small hatchback comes with a maintenance premium.

Most Expensive Failure

OM640.942 (A200 CDI)

“The highest‑output OM640 diesel — 140 bhp, more boost, more stress. When the turbo or injectors fail on this variant, the repair bill is significantly higher than the lower‑output OM640.940 or .941.”

Who it's for: buyers who want the most powerful diesel W169 and are prepared for the higher running costs.

Best Value

OM640.940 (A160 CDI)

“The entry‑level diesel — 82 bhp, 184 Nm, and the cheapest recon cost of any W169 diesel. It's slow, but it's honest, and the low purchase price of an A160 CDI combined with cheap replacement economics makes it the best value proposition in the range.”

Who it's for: budget‑conscious buyers who prioritise running costs over performance.

Most Overlooked

M266.960 (A200)

“The 2.0‑litre naturally aspirated petrol — 136 bhp, no turbo, no direct injection. It's the quiet achiever of the W169 range: more power than the A170, but without the A200 Turbo's complexity or the diesels' DPF and injector concerns.”

Who it's for: buyers who want the best naturally aspirated petrol W169 and don't need a diesel's fuel economy.

Best Diesel Overall

OM640.941 (A180 CDI)

“The sweet spot of the OM640 diesel family — 109 bhp, 250 Nm of torque from just 1,600 rpm, and no catastrophic failure modes. Simple common‑rail injection, robust chain‑driven valvetrain, and the same Euro 4 compliance that kept it in production for the full W169 lifecycle.”

Who it's for: buyers who want diesel economy without the complexity of the A200 CDI's higher boost or the entry‑level A160 CDI's sluggishness.

Best Petrol Overall

M266.940 (A170)

“The 1.7‑litre naturally aspirated petrol — 116 bhp, simple SOHC 8‑valve design, no turbo, no direct injection. It's the most honest engine in the W169 range: smooth, reliable, and cheap to maintain.”

Who it's for: buyers who want a straightforward petrol hatchback without turbo or diesel complications.

Highest Risk

M266.980 (A200 Turbo)

“The only forced‑induction petrol in the W169 range. 193 bhp from a 2.0‑litre turbo sounds appealing, but the added complexity — turbocharger, intercooler, higher boost — introduces failure modes the naturally aspirated M266s simply don't have. Specialist parts are harder to source, and the engine was only fitted to about 2% of W169s.”

Who it's for: enthusiasts who understand that 193 bhp in a small hatchback comes with a maintenance premium.

Most Expensive Failure

OM640.942 (A200 CDI)

“The highest‑output OM640 diesel — 140 bhp, more boost, more stress. When the turbo or injectors fail on this variant, the repair bill is significantly higher than the lower‑output OM640.940 or .941.”

Who it's for: buyers who want the most powerful diesel W169 and are prepared for the higher running costs.

Best Value

OM640.940 (A160 CDI)

“The entry‑level diesel — 82 bhp, 184 Nm, and the cheapest recon cost of any W169 diesel. It's slow, but it's honest, and the low purchase price of an A160 CDI combined with cheap replacement economics makes it the best value proposition in the range.”

Who it's for: budget‑conscious buyers who prioritise running costs over performance.

Most Overlooked

M266.960 (A200)

“The 2.0‑litre naturally aspirated petrol — 136 bhp, no turbo, no direct injection. It's the quiet achiever of the W169 range: more power than the A170, but without the A200 Turbo's complexity or the diesels' DPF and injector concerns.”

Who it's for: buyers who want the best naturally aspirated petrol W169 and don't need a diesel's fuel economy.

Mercedes A-Class W169 — Ownership Economics

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

M266.920 (A150/A160)60k–120kCoil pack / ignition£150–£300£900–£1,800

Cheap Runabout — simple, low‑cost repairs

M266.940 (A170)60k–120kCoil pack / thermostat£150–£400£1,200–£2,200

Best Petrol — reliable, straightforward

M266.960 (A200)60k–120kCoil pack / thermostat£150–£400£1,500–£2,800

Overlooked Gem — more power, no turbo hassle

M266.980 (A200 Turbo)40k–80kTurbo / intercooler£600–£1,500£2,000–£3,800

Enthusiast Only — fast, but costly

OM640.940 (A160 CDI)80k–150kInjector wear / DPF£400–£1,000£1,500–£2,800

Budget Diesel — slow but honest

OM640.941 (A180 CDI)80k–150kInjector wear / DPF£400–£1,200£1,800–£3,200

Best Diesel — sweet spot of the range

OM640.942 (A200 CDI)60k–120kTurbo / injector failure£600–£1,800£2,000–£3,800

Most Expensive — more boost, more risk

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

M266.920 (A150/A160)60k–120kCoil pack / ignition£150–£300£900–£1,800

Cheap Runabout — simple, low‑cost repairs

M266.940 (A170)60k–120kCoil pack / thermostat£150–£400£1,200–£2,200

Best Petrol — reliable, straightforward

M266.960 (A200)60k–120kCoil pack / thermostat£150–£400£1,500–£2,800

Overlooked Gem — more power, no turbo hassle

M266.980 (A200 Turbo)40k–80kTurbo / intercooler£600–£1,500£2,000–£3,800

Enthusiast Only — fast, but costly

OM640.940 (A160 CDI)80k–150kInjector wear / DPF£400–£1,000£1,500–£2,800

Budget Diesel — slow but honest

OM640.941 (A180 CDI)80k–150kInjector wear / DPF£400–£1,200£1,800–£3,200

Best Diesel — sweet spot of the range

OM640.942 (A200 CDI)60k–120kTurbo / injector failure£600–£1,800£2,000–£3,800

Most Expensive — more boost, more risk

The W169 rule

A £1,800–£3,200 OM640 recon against a £2,500–£5,000 W169 sits at 36–128% of the car's value. On a sub‑£3,000 W169, that brushes our 70% Mercedes threshold — we'll honestly tell you to walk away. Against a well‑kept £5,000+ example, the same recon drops to a routine 36–64% — a repair decision, not a financial one. Value the car first.

Key Takeaways

Which W169 Costs Least To Own?
M266.920 — cheap coil packs, no complex systems, lowest recon cost.
Which W169 Costs Most To Own?
M266.980 A200 Turbo — turbo and intercooler repairs add up fast; 2% market share means parts are harder to source.
Which W169 Is Best Value?
A170 (M266.940) — petrol simplicity, 116 bhp, low running costs, and no DPF or injector concerns.

Common Problems

01

M266

Petrol Coil Pack & Ignition Failure

Affected models:

Typical failure mileage:

Root cause:

Tiered Cost Table

Our Recommendation

At the first sign of misfire or rough idle, get the coil packs inspected immediately — a £150–£300 repair is dramatically cheaper than the £900–£1,800 diagnostic and replacement that follows if ignored. On a W169 worth under £3,000, this decision alone determines whether the car stays economically viable.

02

OM640

Injector Wear & DPF Clogging

Affected models:

Typical failure mileage:

Root cause:

Tiered Cost Table

Our Recommendation

On any OM640 W169 over 80,000 miles with no documented injector service history, budget for injector inspection — £400–£1,000 now is far cheaper than the £1,500–£2,800 replacement that follows a failed injector that has contaminated the DPF or damaged the turbo.

03

W169

Sandwich‑Concept Labour Access

Affected models:

Typical failure mileage:

Root cause:

Tiered Cost Table

Our Recommendation

Always factor in the W169 labour premium before committing to any engine repair. A quote that seems "reasonable" for an A‑Class is often 40–80% higher than the same job on a C‑Class or E‑Class simply because of the sandwich‑concept access constraints. Get a specialist W169 quote before approving any work.

W169 Engine Replacement Costs — By Engine and Condition

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

A150/A160M266.920£400–£900£900–£1,800£1,500–£2,5006–10 hrs

A170M266.940£500–£1,200£1,200–£2,200£1,800–£3,0006–10 hrs

A200M266.960£600–£1,400£1,500–£2,800£2,200–£3,8006–10 hrs

A200 TurboM266.980£1,000–£2,200£2,000–£3,800£3,000–£5,0008–12 hrs

A160 CDIOM640.940£700–£1,500£1,500–£2,800£2,500–£4,0008–12 hrs

A180 CDIOM640.941£800–£1,800£1,800–£3,200£2,800–£4,5008–12 hrs

A200 CDIOM640.942£900–£2,000£2,000–£3,800£3,200–£5,0008–12 hrs

No Generation variance from the Engine Page baseline — no Engine Page exists yet for any M266 or OM640 family. These costs are derived from the EM_Proprietary_Data Table A — Engine Replacement Economics for comparable engines (e.g., Renault K9K 1.5 dCi, Ford DV6 1.6 TDCi), adjusted for the W169's sandwich‑concept labour premium and marked [MB-QUOTE] accordingly. All figures are provisional pending dedicated Engine Pages.

Core Variants

Diesel Variants

A160 CDIA180 CDIA200 CDI

Petrol Variants

A150A160A170A200A200 Turbo

Scope note: All variants listed are W169 five‑door hatchback only. C169 three‑door Coupé shares all these engines but is covered on its own Generation Page, since labour access varies slightly by body style and the C169's sportier positioning attracts a different ownership profile.

Core Variants

Diesel Variants

A160 CDIA180 CDIA200 CDI

Petrol Variants

A150A160A170A200A200 Turbo

Scope note: All variants listed are W169 five‑door hatchback only. C169 three‑door Coupé shares all these engines but is covered on its own Generation Page, since labour access varies slightly by body style and the C169's sportier positioning attracts a different ownership profile.

Market Intelligence

Most Requested E90 Engines (2025)

1.1. A180 CDI (OM640.941)
2.2. A170 (M266.940)
3.3. A200 CDI (OM640.942)

Most Requested E90 Variants

1.1. A180 CDI
2.2. A170
3.3. A160 CDI

Average E90 Replacement Cost

£1,800–£3,200 reconditioned, supply only [MB-QUOTE]

Most Common E90 Failures

1.1. M266 coil pack failure
2.2. OM640 injector wear
3.3. Sandwich‑concept labour access premium

Live Feed

VehicleLocationIssueEnquiries

Mercedes A180 CDI (OM640)

Birmingham

Rough idle / injector leak‑off

4

enquiries

Mercedes A170 (M266)

Manchester

Misfire / coil pack

3

enquiries

Mercedes A200 CDI (OM640)

London

DPF clogged / limp mode

2

enquiries

Updated Monthly

FAQ

BMW 3 Series E90 rear three-quarter view

Why UK Mercedes A-Class W169 Owners Trust MercedesEngines.uk

Trusted W169 Engine Suppliers
every garage and engine rebuilder in our network is vetted, rated and reviewed by real W169 owners, as part of the Engine Finders network.
Compare W169 Engine Replacement Companies
see prices, warranty terms and supply & fit options side‑by‑side before you commit.
UK Engine Replacement Services for W169
covering every variant from A150 to A200 Turbo, with supply‑only or full supply & fit available nationwide.

Find the best Mercedes W169 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 A-Class W169 Engine Prices on EnginesMarket

Why UK Mercedes A-Class W169 Owners Trust MercedesEngines.uk

Trusted W169 Engine Suppliers
every garage and engine rebuilder in our network is vetted, rated and reviewed by real W169 owners, as part of the Engine Finders network.
Compare W169 Engine Replacement Companies
see prices, warranty terms and supply & fit options side‑by‑side before you commit.
UK Engine Replacement Services for W169
covering every variant from A150 to A200 Turbo, with supply‑only or full supply & fit available nationwide.

Find the best Mercedes W169 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 A-Class W169 Engine Prices on EnginesMarket

Mercedes A-Class W169 Engines — The Complete UK Guide

Mercedes A-Class W169 Engine Codes — The Complete Database

Mercedes A-Class W169 — Overview

Mercedes A-Class W169 — Overview

Best & Worst Engines

Mercedes A-Class W169 — Ownership Economics

Common Problems

W169 Engine Replacement Costs — By Engine and Condition

Core Variants

Core Variants

Market Intelligence

FAQ

Why UK Mercedes A-Class W169 Owners Trust MercedesEngines.uk

Why UK Mercedes A-Class W169 Owners Trust MercedesEngines.uk