Mercedes AMG GT REngine Rebuild— From £3,200
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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 AMG GT R Engine
Vehicle
Mercedes AMG GT R
Model
AMG GT
Variant
AMG GT R
Fuel
Petrol Twin-Turbo
Engine
M178
Capacity
4.0L V8
Generation
C190 (2015–2023)
Rebuild From
£5,500
Not sure which engine you have?
The AMG GT R 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 AMG GT REngine Rebuild Price
Starting From £5,500
Engine Code
M256Rebuild From
£3,200
Generation
R190 (2023–present)
Exact price depends on condition and parts required — submit your reg for a fixed-price quote.
Mercedes AMG GT R 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 AMG GT R uses a completely different engine family from the V8 M178 fitted to the AMG GT 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 AMG GT RENGINE OPTIONS
Every AMG GT R is different. That's why we offer the right solution for your engine, your car and your budget.
REBUILDING YOUR AMG GT R ENGINE
We rebuild the engine your AMG GT R 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 AMG GT R 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 AMG GT R ENGINES
Restoring your existing engine to full working condition rather than replacing it outright. Our rebuild service covers this.
Learn moreREMANUFACTURED AMG GT R ENGINES
Built to original specification with updated components. That's consistent with what our rebuild service delivers on the M256.
Learn moreREPLACEMENT AMG GT R 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 AMG GT R 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 AMG GT R, 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 AMG GT R rebuild looks like.
Mercedes AMG GT R ENGINE REBUILD PROCESS
WHAT MERCEDES AMG GT R OWNERS SAY
WE COVER YOUREXACT VEHICLE
Enter your registration below and we'll confirm your AMG GT R has the M256, along with an exact rebuild price.
WHY MERCEDES AMG GT R 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 AMG GT R
RECOVERY
Mercedes AMG GT 63
DIAGNOSTICS
Mercedes AMG GT
STRIPPED ENGINE
Mercedes AMG GT S
TIMING CHAIN REPLACEMENT
Mercedes AMG GT R
IN FOR REBUILD
Mercedes AMG GT C
REBUILD IN PROGRESS
HOW IT WORKS
SEND YOURREGISTRATION
RECEIVE YOURFIXED-PRICE QUOTE
WE RECOVERYOUR CAR
REBUILD &REFIT
Most AMG GT 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 AMG GT R 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 AMG GT R ENGINE
The AMG GT R uses the M178 — a 4.0-litre twin-turbo V8 that was fitted to the C190 generation from 2015 to 2023. It's the most track-focused version of the first‑generation AMG GT, and its engine shares the same core design as other M178‑powered variants. The AMG GT R is no longer in production, but we continue to rebuild and replace engines for every one still on the road.
We continue to rebuild and replace M256 engines for every AMG GT R on the road.
MERCEDES AMG GT R ENGINE CODES
M256 (R190, 2023–present)
A 3.0-litre inline-six petrol mild-hybrid engine fitted to the AMG GT R from 2023 to present. The M256 features an integrated starter-generator (ISG) and electric auxiliary compressor, making it 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.
Check Your M256 AMG GT RMERCEDES AMG GT R ENGINE COMPATIBILITY
Because the GT R uses a single engine code (M178) across its entire C190 run, there's less guesswork than with some multi-engine models. However, the M178 appeared in different states of tune across the AMG GT range, and ancillaries (turbochargers, cooling systems, ECU calibration) vary by sub‑variant. Before we quote or supply anything, we confirm: - Your exact M178 engine code and generation - Specific GT R tuning and component spec - Any unique parts fitted to the R version (e.g. different turbos or cooling) - ECU and drivetrain configuration
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 AMG GT quote — it protects you from paying for parts that don't fit your actual car.
MERCEDES AMG GT R APPLICATIONS BY GENERATION
Generation
Chassis
Years
Engine Code
Fuel
MERCEDES AMG GT R ENGINES BY YEAR
From the R190's launch in 2023, the AMG GT R 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 AMG GT R 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 AMG GT R MODEL YEAR:
Mercedes AMG GT R
2015 Engine Rebuild
Mercedes AMG GT R
2016 Engine Rebuild
Mercedes AMG GT R
2017 Engine Rebuild
Mercedes AMG GT R
2018 Engine Rebuild
Mercedes AMG GT R
2019 Engine Rebuild
Mercedes AMG GT R
2020 Engine Rebuild
Mercedes AMG GT R
2021 Engine Rebuild
Mercedes AMG GT R
2022 Engine Rebuild
Mercedes AMG GT R
2023 Engine Rebuild
If your registration year isn't listed above, get in touch — we'll confirm availability directly against your reg.
MERCEDES AMG GT R ENGINE COSTS
A Mercedes AMG GT R engine rebuild starts from
£5,500
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 AMG GT R ENGINE SIZES
• Mercedes AMG GT R 3.0 Litre Engine (M256, I6)
MERCEDES AMG GT R FUEL TYPES
• Mercedes AMG GT R Petrol Mild Hybrid Engine Rebuilds
RELATED MERCEDES AMG GT VARIANTS
Most Mercedes AMG GT engine rebuilds are completed within 3-5 working days.
Nationwide recovery and collection available for all AMG GT models.