Mercedes CLK 500Engine Rebuild— From £4,500
Specialist Mercedes CLK 500 engine rebuilds and replacements, with registration-based engine matching, nationwide recovery and a 12-month unlimited-mileage warranty
Rated Mercedes Engine Specialists — 1,800+ Engines Rebuilt
Specialist technicians with 10-15 years of experience
12 Month Unlimited-Mileage Warranty
Nationwide Recovery
Free Engine Matching by Registration
M256 Specialists
Your Mercedes CLK 500 Engine
Vehicle
Mercedes CLK 500
Model
CLK
Variant
CLK 500
Fuel
Petrol
Engine
M113 (C208) or M273 (C209)
Capacity
5.0L / 5.5L V8
Generation
C208 (1997–2003) · C209 (2002–2009)
Rebuild From
£4,500
Not sure which engine you have?
The CLK 500 uses the M256 3.0-litre inline-six mild-hybrid engine — enter your registration below and we'll confirm your exact spec before you get a quote.
DVLA & VIN verified
100% secure & private
No obligation quote
Mercedes CLK 500Engine Rebuild Price
Starting From £4,500
Exact price depends on condition and parts required — submit your reg for a fixed-price quote.
Mercedes CLK 500 Oil Leaks & Coolant System Wear (M256 I6)
The M256 is a sophisticated 3.0-litre inline-six with an integrated starter-generator and electric auxiliary compressor — a more modern and efficient design than the older M276 V6. We replace timing chains, bearings, water pump and gaskets as standard on every M256 rebuild.
Because the CLK 500 uses a completely different engine family from the V8 M178 fitted to the CLK 63 and GT 63 S, parts and rebuild specifications don't cross over between them.
Source: Established M256 specialist pattern — timing chain, bearing and gasket wear across integrated-starter-generator inline-six units.
Mercedes CLK 500ENGINE OPTIONS
Every CLK 500 is different. That's why we offer the right solution for your engine, your car and your budget.
REBUILDING YOUR CLK 500 ENGINE
We rebuild the engine your CLK 500 already has instead of selling you a used engine of unknown history — strip it down, pressure-test it, and replace every worn or damaged component (timing chains, bearings, water pump, gaskets) with updated OEM parts. Near-new performance with a 12-month unlimited-mileage warranty.
From £3,200RECONDITIONED CLK 500 ENGINES
A full strip-down, inspection and replacement of worn parts rather than a straight swap. If that's what you're after, our rebuild service is exactly that.
Learn moreREFURBISHED CLK 500 ENGINES
Restoring your existing engine to full working condition rather than replacing it outright. Our rebuild service covers this.
Learn moreREMANUFACTURED CLK 500 ENGINES
Built to original specification with updated components. That's consistent with what our rebuild service delivers on the M256.
Learn moreREPLACEMENT CLK 500 ENGINES
If your existing engine is beyond economical repair, we offer complete engine replacement and fitting – sourced and fitted by our team, with the same 12-month warranty.
Learn moreUSED CLK 500 ENGINES
Matched low-mileage used engines for when time is critical. We source and fit these too, but most owners choose a rebuild once they understand the compatibility risks.
Learn moreNOT SURE WHICH OPTION IS RIGHT FOR YOU?
Enter your registration below and we'll confirm your M256 and talk you through the best solution for your CLK 500, honestly.
Ask About Your Options
OUR WORKSHOP
01RECOVERY COLLECTION
02M256 ENGINE STRIPPED FOR REBUILD INSPECTION
03VALVE COVERS & COOLANT COMPONENT WORK
04TECHNICIANS AT WORK
05ENGINE TESTING (RIG)
06COMPLETED & READY FOR REFIT
Real photos from our workshop — not stock imagery. This is what a genuine Mercedes CLK 500 rebuild looks like.
Mercedes CLK 500 ENGINE REBUILD PROCESS
WHAT MERCEDES CLK 500 OWNERS SAY
WE COVER YOUREXACT VEHICLE
Enter your registration below and we'll confirm your CLK 500 has the M256, along with an exact rebuild price.
WHY MERCEDES CLK 500 OWNERS CHOOSE US
Engine matched using VIN or registration number — confirms M113 vs M273 before you're quoted
Genuine specialist workshop — not a broker
Specialist technicians with 10-15 years of experience
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 CLK 500
RECOVERY
Mercedes CLK 63
DIAGNOSTICS
Mercedes CLK
STRIPPED ENGINE
Mercedes CLK S
TIMING CHAIN REPLACEMENT
Mercedes CLK 500
IN FOR REBUILD
Mercedes CLK C
REBUILD IN PROGRESS
HOW IT WORKS
SEND YOURREGISTRATION
RECEIVE YOURFIXED-PRICE QUOTE
WE RECOVERYOUR CAR
REBUILD &REFIT
Most CLK models 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.
LOOKING FOR A USED ORREPLACEMENT ENGINEINSTEAD?
We supply low-mileage, VIN-matched used units too, and offer full replacement and fitting. However, most CLK 500 owners choose a rebuild once they realise it removes compatibility risk and works out more cost-effective over the life of the car.
Enter your reg below — we'll show you every option, honestly.
ABOUT THE MERCEDES CLK 500 ENGINE
The CLK 500 has been part of the CLK range since 1997, and across its two generations has used two different V8 engines. The earlier C208 generation (1997–2003) uses the M113 — a 5.0-litre V8 that was widely used across Mercedes models of that era. From 2002, the C209-generation CLK 500 switched to the M273, a 5.5-litre V8 that's a different unit entirely, not just a displacement bump. Knowing which one your car has matters, because the components and rebuild specifics differ between them — which is exactly why we confirm your exact engine by registration before quoting.
We continue to rebuild and replace M256 engines for every CLK 500 on the road.
MERCEDES CLK 500 ENGINE CODES
M113 (C208)
A 5.0-litre V8 fitted to the CLK 500 from 1997 to 2003 (C208 generation). No specific known issue confirmed for this application. We service it to the same standard as our other CLK 500 rebuilds, replacing timing chain components, bearings, valve seals, and gaskets as required.
Check Your M113 CLK 500M273 (C209)
A 5.5-litre V8 fitted to the CLK 500 from 2002 to 2009 (C209 generation). No specific known issue confirmed for this application. We service it to the same standard as our other CLK 500 rebuilds, replacing timing chain components, bearings, valve seals, and gaskets as required.
Check Your M273 CLK 500MERCEDES CLK 500 ENGINE COMPATIBILITY
Because the CLK 500 spans two distinct V8 engines across two generations, fitting the wrong replacement — or assuming an M113 part will work on an M273 car — risks a compatibility problem that's expensive to unpick. Before we quote or supply anything, we confirm:
Your exact engine code (M256) via registration or VIN
Your generation (R190)
Drivetrain and ancillary specification
Any electronics or ECU considerations specific to your exact build
This is why we always start with your registration rather than a generic CLK quote — it protects you from paying for parts that don't fit your actual car.
MERCEDES CLK 500 ENGINES BY YEAR
From the R190's launch in 2023, the CLK 500 has used the M256 3.0-litre inline-six mild hybrid throughout. If you're unsure of your exact spec, we'll confirm it before you book.
The M256 has been fitted to every CLK 500 since launch — if your registration year isn't listed above, get in touch and we'll confirm availability directly against your reg.
WE COVER EVERY MERCEDES CLK 500 MODEL YEAR:
Mercedes CLK 500
1997 Engine Rebuild
Mercedes CLK 500
1998 Engine Rebuild
Mercedes CLK 500
1999 Engine Rebuild
Mercedes CLK 500
2000 Engine Rebuild
Mercedes CLK 500
2001 Engine Rebuild
Mercedes CLK 500
2002 Engine Rebuild
Mercedes CLK 500
2003 Engine Rebuild
Mercedes CLK 500
2004 Engine Rebuild
Mercedes CLK 500
2005 Engine Rebuild
Mercedes CLK 500
2006 Engine Rebuild
Mercedes CLK 500
2007 Engine Rebuild
Mercedes CLK 500
2008 Engine Rebuild
Mercedes CLK 500
2009 Engine Rebuild
If your registration year isn't listed above, get in touch — we'll confirm availability directly against your reg.
MERCEDES CLK 500 ENGINE COSTS
A Mercedes CLK 500 engine rebuild starts from
£4,500
A full replacement engine and fitting service is also available. Exact pricing depends on the condition of your existing engine and the parts required — submit your registration for a fixed-price quote within 30 minutes.
12 MONTH
UNLIMITED-MILEAGE
WARRANTY
MERCEDES CLK 500 ENGINE SIZES
• Mercedes CLK 500 3.0 Litre Engine (M256, I6)
MERCEDES CLK 500 FUEL TYPES
• Mercedes CLK 500 Petrol Mild Hybrid Engine Rebuilds
RELATED MERCEDES CLK VARIANTS
Most Mercedes CLK engine rebuilds are completed within 3-5 working days.
Nationwide recovery and collection available for all CLK models.
