Mercedes ML350Engine Rebuild— From £3,200
slug: /mercedes-ml350-engines
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 ML350 Engine
Vehicle
Mercedes ML350
Model
M-Class
Variant
ML350
Fuel
Petrol
Engine
M112 (W163) or M272 (W164)
Capacity
3.2L–3.5L V6
Generation
W163 (1997–2005) · W164 (2005–2011)
Rebuild From
£2,800
Not sure which engine you have?
The ML350 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 ML350Engine Rebuild Price
Starting From £2,800
Engine Code
M112Rebuild From
£2,800
Generation
W163 (1997–2005)
Engine Code
M272Rebuild From
£2,800
Generation
W164 (2005–2011)
Exact price depends on condition and parts required — submit your reg for a fixed-price quote.
Mercedes ML350 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 ML350 uses a completely different engine family from the V8 M178 fitted to the M-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 ML350ENGINE OPTIONS
Every ML350 is different. That's why we offer the right solution for your engine, your car and your budget.
REBUILDING YOUR ML350 ENGINE
We rebuild the engine your ML350 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 ML350 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 ML350 ENGINES
Restoring your existing engine to full working condition rather than replacing it outright. Our rebuild service covers this.
Learn moreREMANUFACTURED ML350 ENGINES
Built to original specification with updated components. That's consistent with what our rebuild service delivers on the M256.
Learn moreREPLACEMENT ML350 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 ML350 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 ML350, 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 ML350 rebuild looks like.
Mercedes ML350 ENGINE REBUILD PROCESS
WHAT MERCEDES ML350 OWNERS SAY
WE COVER YOUREXACT VEHICLE
Enter your registration below and we'll confirm your ML350 has the M256, along with an exact rebuild price.
WHY MERCEDES ML350 OWNERS CHOOSE US
Engine matched using VIN or registration number — confirms M112 vs M272 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 ML350
RECOVERY
Mercedes M-Class 63
DIAGNOSTICS
Mercedes M-Class
STRIPPED ENGINE
Mercedes M-Class S
TIMING CHAIN REPLACEMENT
Mercedes ML350
IN FOR REBUILD
Mercedes M-Class C
REBUILD IN PROGRESS
HOW IT WORKS
SEND YOURREGISTRATION
RECEIVE YOURFIXED-PRICE QUOTE
WE RECOVERYOUR CAR
REBUILD &REFIT
Most M-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 ML350 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 ML350 ENGINE
The ML350 has been part of the M-Class range since 1997. Early W163-generation cars use the M112 — a 3.2-litre V6 petrol. From 2005, the W164-generation ML350 uses the M272, a 3.5-litre V6 petrol. The full breakdown by engine code is below.
We continue to rebuild and replace M256 engines for every ML350 on the road.
MERCEDES ML350 ENGINE CODES
M112 (W163)
A 3.2-litre V6 petrol engine fitted to the ML350 from 1997 to 2005 in the W163 generation. No specific known issue has been independently confirmed for this application. We replace timing chains, bearings and gaskets as standard on every rebuild.
Check Your M112 ML350M272 (W164)
A 3.5-litre V6 petrol engine fitted to the ML350 from 2005 to 2011 in the W164 generation. No specific known issue has been independently confirmed for this application. We service it to the same standard as our other ML350 rebuilds.
Check Your M272 ML350MERCEDES ML350 ENGINE COMPATIBILITY
Because the ML350 spans two distinct V6 engines across two generations, fitting the wrong replacement — or assuming an M112 part will work on an M272 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 M-Class quote — it protects you from paying for parts that don't fit your actual car.
MERCEDES ML350 ENGINES BY YEAR
From the R190's launch in 2023, the ML350 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 ML350 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 ML350 MODEL YEAR:
Mercedes ML350
1997 Engine Rebuild
Mercedes ML350
1998 Engine Rebuild
Mercedes ML350
1999 Engine Rebuild
Mercedes ML350
2000 Engine Rebuild
Mercedes ML350
2001 Engine Rebuild
Mercedes ML350
2002 Engine Rebuild
Mercedes ML350
2003 Engine Rebuild
Mercedes ML350
2004 Engine Rebuild
Mercedes ML350
2005 Engine Rebuild
Mercedes ML350
2006 Engine Rebuild
Mercedes ML350
2007 Engine Rebuild
Mercedes ML350
2008 Engine Rebuild
Mercedes ML350
2009 Engine Rebuild
Mercedes ML350
2010 Engine Rebuild
Mercedes ML350
2011 Engine Rebuild
If your registration year isn't listed above, get in touch — we'll confirm availability directly against your reg.
MERCEDES ML350 ENGINE COSTS
A Mercedes ML350 engine rebuild starts from
£2,800
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 ML350 ENGINE SIZES
• Mercedes ML350 3.0 Litre Engine (M256, I6)
MERCEDES ML350 FUEL TYPES
• Mercedes ML350 Petrol Mild Hybrid Engine Rebuilds
RELATED MERCEDES M-CLASS VARIANTS
Most Mercedes M-Class engine rebuilds are completed within 3-5 working days.
Nationwide recovery and collection available for all M-Class models.