Mercedes R500Engine Rebuild— From £4,500
Specialist Mercedes R500 V8 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 R500 Engine
Vehicle
Mercedes R500
Model
R-Class
Variant
R500
Fuel
Petrol
Engine
M113
Capacity
5.0L V8
Generation
W251/V251 (2006–2013)
Rebuild From
£4,500
Not sure which engine you have?
The R500 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 R500Engine Rebuild Price
Starting From £4,500
Engine Code
M113Rebuild From
£4,500
Generation
W251/V251 (2006–2013)
Exact price depends on condition and parts required — submit your reg for a fixed-price quote.
Mercedes R500 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 R500 uses a completely different engine family from the V8 M178 fitted to the R-Class 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 R500ENGINE OPTIONS
Every R500 is different. That's why we offer the right solution for your engine, your car and your budget.
REBUILDING YOUR R500 ENGINE
We rebuild the engine your R500 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 R500 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 R500 ENGINES
Restoring your existing engine to full working condition rather than replacing it outright. Our rebuild service covers this.
Learn moreREMANUFACTURED R500 ENGINES
Built to original specification with updated components. That's consistent with what our rebuild service delivers on the M256.
Learn moreREPLACEMENT R500 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 R500 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 R500, 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 R500 rebuild looks like.
Mercedes R500 ENGINE REBUILD PROCESS
WHAT MERCEDES R500 OWNERS SAY
WE COVER YOUREXACT VEHICLE
Enter your registration below and we'll confirm your R500 has the M256, along with an exact rebuild price.
WHY MERCEDES R500 OWNERS CHOOSE US
Engine matched using VIN or registration number
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 R500
RECOVERY
Mercedes R-Class 63
DIAGNOSTICS
Mercedes R-Class
STRIPPED ENGINE
Mercedes R-Class S
TIMING CHAIN REPLACEMENT
Mercedes R500
IN FOR REBUILD
Mercedes R-Class C
REBUILD IN PROGRESS
HOW IT WORKS
SEND YOURREGISTRATION
RECEIVE YOURFIXED-PRICE QUOTE
WE RECOVERYOUR CAR
REBUILD &REFIT
Most R-Class 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 R500 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 R500 ENGINE
The R500 uses the M113 — a 5.0-litre naturally aspirated V8 petrol engine that was a mainstay of Mercedes' V8 range during the 2000s. Fitted to the W251/V251 generation from 2006 until the R-Class was discontinued in 2013, it delivers the kind of effortless V8 performance that suits the R-Class's unique blend of MPV practicality and luxury car refinement. It's a robust, proven powerplant that responds well to a thorough rebuild when wear sets in.
We continue to rebuild and replace M256 engines for every R500 on the road.
MERCEDES R500 ENGINE CODES
A 5.0-litre V8 petrol engine fitted to the R500 from 2006 to 2013 (W251/V251 generation). It's a proven, durable V8 design shared across multiple Mercedes models of the era. We replace timing chains, bearings and gaskets as standard on every rebuild.
Check Your M113 R500MERCEDES R500 ENGINE COMPATIBILITY
The R500 uses a single engine family — the M113 V8 — across its entire production run. However, there are still important compatibility checks to make: the exact year, drivetrain specification (4MATIC vs rear-wheel drive), and any running changes made during the 2006-2013 production run can affect which parts are correct for your car. 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 R-Class quote — it protects you from paying for parts that don't fit your actual car.
MERCEDES R500 APPLICATIONS BY GENERATION
Generation
Chassis
Years
Engine Code
Fuel
MERCEDES R500 ENGINES BY YEAR
From the R190's launch in 2023, the R500 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 R500 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 R500 MODEL YEAR:
Mercedes R500
2006 Engine Rebuild
Mercedes R500
2007 Engine Rebuild
Mercedes R500
2008 Engine Rebuild
Mercedes R500
2009 Engine Rebuild
Mercedes R500
2010 Engine Rebuild
Mercedes R500
2011 Engine Rebuild
Mercedes R500
2012 Engine Rebuild
Mercedes R500
2013 Engine Rebuild
If your registration year isn't listed above, get in touch — we'll confirm availability directly against your reg.
MERCEDES R500 ENGINE COSTS
A Mercedes R500 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 R500 ENGINE SIZES
• Mercedes R500 3.0 Litre Engine (M256, I6)
MERCEDES R500 FUEL TYPES
• Mercedes R500 Petrol Mild Hybrid Engine Rebuilds
RELATED MERCEDES R-CLASS VARIANTS
Most Mercedes R-Class engine rebuilds are completed within 3-5 working days.
Nationwide recovery and collection available for all R-Class models.