Mercedes-BenzMERCEDES GARAGEMERCEDES ENGINE SPECIALISTS
Mercedes technician rebuilding an engine block

Mercedes S-Class Specialists

Mercedes S-ClassEngine Rebuild &Replacement Specialists

We rebuild your original engine to near-new condition — new timing chains, injector seals, valve seals and coolant components — and back it with a 12-month unlimited-mileage warranty

Rated Mercedes Engine Specialists — 1,800+ Engines Rebuilt

12 Month Unlimited-Mileage Warranty

Nationwide Recovery

Mercedes-Trained Technicians

Updated OEM Components

Free Engine Matching by Registration

Starting From

£2,800

Get a Fixed-Price Quote →

Find Your Engine Match

Enter your registration and we'll find the exact engine for your Mercedes.

GB

We use your reg to find the exact engine for your Mercedes

Call Our Specialists:

0203 488 4649

Trusted by Mercedes owners across the UK

Known Issue

Mercedes S-ClassOM642& AMG V8/V12 Issues?

The OM642 diesel V6 is known for swirl flap and injector wear, an established pattern with multiple TSBs. If your S-Class is an AMG with the M157/M177 V8, valve seal and coolant system wear is a separately documented pattern. The S65's M275 V12 is a genuinely high-complexity rebuild that we always assess and price individually.

No hidden extras.

Mercedes OM651 timing chain assembly

A Well-Documented Issue

OM651 injector seal leaks and timing chain wear are widely documented across Mercedes specialist forums and official TSBs.

New Timing Chains

Replaced as standard (where worn or damaged)

New Tensioners

For maximum reliability

New Injector Seals

Updated OEM components

Peace Of Mind

No hidden extras — just a stronger, longer-lasting engine

Mercedes C-Class in a dark Mercedes service workshop

Transparent Pricing

Mercedes S-ClassRebuild Pricing

Starting From:

6-Cylinder Diesel Rebuild

6-Cylinder Diesel

Rebuild

(OM642/OM656)

From

£2,800

6-Cylinder Petrol Rebuild

6-Cylinder Petrol

Rebuild

(M276/M256)

From

£3,200

V8 Rebuild

V8

Rebuild

(M278)

From

£4,500

M
AMG V8 Rebuild

AMG V8

Rebuild

(M157/M177)

From

£6,500

V12 Rebuild

V12

Rebuild

(M275, assessed individually)

From

£8,000+

Nationwide Recovery

Nationwide

Recovery

From

£from £70

Exact price depends on engine code, condition and parts required — full pricing further down this page.

Get Your Fixed-Price QuoteIn Under 30 Minutes

Request Quote

Full Breakdown

Mercedes S-ClassEngine Rebuild Price Guide

Prices vary by engine code, condition, and parts required. Ranges below are a guide — request a free quote for an exact fixed price on your specific engine.

Engine Code

Fuel

Size

Chassis

Rebuild Price Range

OM611 / OM646

Diesel

2.2L

W203 / W204

£2,200 – £3,000

OM651

Diesel

2.1L

W204 / W205

£2,200 – £3,500

OM654

Diesel

2.0L

W205 / W206

£2,400 – £3,800

M111 / M112

Petrol

1.8 – 2.8L

W202 / W203

£2,200 – £3,200

M274

Petrol

2.0L

W204 / W205

£2,200 – £3,000

M276

Petrol

3.0 – 3.5L

W204 / W205

£3,200 – £4,800

M156 (pre-2012 C63 AMG)

Petrol

6.2L

W204

£6,500 – £10,000

M177 (C63 AMG)

Petrol Twin-Turbo

4.0L

W205

£6,500 – £9,500

OEM Components

Updated components for maximum reliability

Key Parts Replaced

Timing chains, injector seals, tensioners & gaskets

Recovery From £70

Nationwide recovery quoted separately

Prices Exclude VAT

Unless stated otherwise

i

Every rebuild identifies and replaces worn or damaged timing chains, injector seals, tensioners and gaskets with updated OEM components. Recovery quoted separately from £70. Prices exclude VAT unless stated.

Precision-machined Mercedes engine block

Why We RebuildInstead Of Swap

Most engine suppliers sell you a used engine of unknown history and hope it matches. We do it differently.

We rebuild the engine your S-Class already has — strip it down, pressure-test it, and replace every worn or damaged component with new OEM parts. You get a near-new engine that's better than what came out, with a 12-month unlimited-mileage warranty — and you keep your car's original identity.

Used engines carry hidden wear, unknown mileage and compatibility risk. A rebuild removes that risk entirely — and more often than not, it works out cheaper than sourcing and fitting a used replacement, both short and long term.

Rebuild

VS

Used Engine Swap

Our Rebuild

Typical Used Engine

Engine Number

Keep your original matching number

Different engine — mismatched VIN

History

Fully inspected & rebuilt by us

Unknown mileage, service history & wear

Worn/Damaged Components

Identified and replaced with updated OEM parts

Left as-is

Warranty

12-month unlimited mileage

Often 30–90 days only

Get Your Fixed-Price Quote In Under 30 Minutes

Request Quote

1,800+

Mercedes Engines Rebuilt

4.8

Average Rating (GMB & Trustpilot)

12 Months

Unlimited-Mileage Warranty

15+ Years

Specialist Experience

Our Workshop

Recovery Collection01

Recovery Collection

Stripped Engine Block02

Stripped Engine Block

Timing Chain Replacement03

Timing Chain Replacement

Technicians At Work04

Technicians At Work

Engine Testing Rig05

Engine Testing Rig

Completed & Ready For Refit06

Completed & Ready For Refit

Clean Workshop Bays07

Clean Workshop Bays

Parts & Components08

Parts & Components

Before / After Comparison09

Before / After Comparison

Our Specialist Team10

Our Specialist Team

Real photos from our workshop — not stock imagery. This is what a genuine rebuild looks like.

Mercedes-Benz

What Mercedes S-ClassOwners Say

Daniel R.

Brilliant service from start to finish. My C220d runs better than it ever has. Honest advice, clear pricing and the team know their stuff.

C220d Engine Rebuild

Mark T.

They rebuilt my OM651 engine with all the updated parts. No more injector leaks. Smooth process and great communication.

C220d Engine Rebuild

Ryan P.

Top lads, top job. Picked up and dropped off, engine rebuilt to an extremely high standard. 100% recommend.

C300 Engine Rebuild

Steve B.

Saved me thousands compared to a Mercedes dealer quote. Fantastic workmanship and my C250d is running perfectly.

C250d Engine Rebuild

Tom H.

From quote to collection couldn't fault them. Engine looks brand new inside. Warranty gives great peace of mind.

C200 Engine Rebuild

James K.

Professional, reliable and fairly priced. Camshaft adjuster issue on my C63 AMG sorted properly and kept me updated throughout.

C63 AMG Engine Rebuild

Mercedes registration lookup diagnostics

We Cover YourExact Vehicle

Enter your registration below and we'll match your exact engine, spec and rebuild price instantly.

GB

Live DVLA/VIN API integration. Dev to wire up. Submits into quote form flow.

Or Browse By:

Each option expands into the checklist sections in the coverage area below.

Mercedes technician rebuilding an engine block

Why Mercedes OwnersChoose Us

Engine matched using VIN or registration number

Genuine specialist workshop — not a broker

Mercedes-trained technicians

We don't swap your engine for an unknown used unit

Nationwide recovery, workshop rebuild

12 month unlimited-mileage warranty

All engine ancillaries serviced as part of the rebuild

Trade & public enquiries welcome

Dedicated advisor from quote to fit

Our Most RecentMercedes Recoveries & Rebuilds

Real vehicles brought into our workshop. Open bonnets, stripped blocks, and cars ready for collection — this is what genuine engine work looks like.

Mercedes C220d

Mercedes C220d

Recovery

Mercedes C300d

Mercedes C300d

Diagnostics

Mercedes C200

Mercedes C200

Stripped Engine

Mercedes C63 AMG

Mercedes C63 AMG

Timing Chain Replacement

Mercedes C180

Mercedes C180

In For Rebuild

Mercedes C250d

Mercedes C250d

Rebuild In Progress

Mercedes C220d

Mercedes C220d

Nationwide Recovery

Mercedes C43 AMG

Mercedes C43 AMG

Ready For Collection

Real photos from our workshop — not stock imagery. This is what a genuine rebuild looks like.

How It Works

1

Send YourRegistration

2

Receive YourFixed-Price Quote

3

We RecoverYour Car

4

Rebuild &Refit

Most Mercedes are recovered within a few hours of booking. Most rebuilds are completed within 3–5 working days.

Workshop slots fill up fast — book your recovery today.

Racked Mercedes replacement engines in storage

Looking For AUsed OrReplacementEngine Instead?

We supply low-mileage, VIN-matched used units too. However, most Mercedes owners choose a rebuild once they realise it removes compatibility risk, keeps their original engine number, and often works out cheaper than fitting an unknown used engine.

Enter your reg below — we'll show you both options.

Ask About Used Engine Options
Mercedes C-Class in a bright Mercedes specialist workshop

Mercedes S-ClassEngine Coverage

Engines by Model Year

Our Mercedes engine specialist garage covers all engine types from 1993 to 2026, across every S-Class generation.

1991–1998(W140)

1991 through 1998 Mercedes S-Class engines

1998–2005(W220)

1998 through 2005 Mercedes S-Class engines

2005–2013(W221)

2005 through 2013 Mercedes S-Class engines

2013–2020(W222)

2013 through 2020 Mercedes S-Class engines

2020–present(W223)

2020, 2021, 2022, 2023, 2024, 2025, 2026 Mercedes S-Class engines

If your registration year isn't listed, get in touch — we'll confirm availability directly against your reg.

Precision-machined Mercedes engine block

Engine Sizes

Mercedes C-Class3.0 Litre Engine

Mercedes C-Class4.0 Litre Engine

Mercedes C-Class4.7 Litre Engine

Mercedes C-Class5.5 Litre Engine

Mercedes C-Class6.0 Litre Engine

Fuel Types

Mercedes C-ClassDiesel Engine Rebuilds

Mercedes C-ClassPetrol Engine Rebuilds

Mercedes C-ClassPetrol/Electric Rebuilds (C350e Hybrid)

Services Available

Engine Rebuild

Engine Replacement

Supply & Fit

Matched Used Engines (where suitable)

Nationwide Recovery

Full Variant Coverage

We Cover EveryMercedes S-Class Variant

Frequently Asked Questions

Get Your FreeMercedes S-ClassFixed-Price Quote

Most quotes returned within 30 minutes during working hours.