Mercedes GLC43 AMGEngine Rebuild— From £6,500
Specialist Mercedes GLC43 AMG 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 GLC43 AMG Engine
Vehicle
Mercedes GLC43 AMG
Model
GLC-Class
Variant
GLC43 AMG
Fuel
Petrol / Petrol Hybrid
Engine
M276 (X253) or M139 (X254)
Capacity
3.0L V6 / 2.0L I4 Hybrid
Generation
X253 (2015–2022) · X254 (2022–present)
Rebuild From
£6,500
Not sure which engine you have?
The GLC43 AMG 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 GLC43 AMGEngine Rebuild Price
Starting From £6,500
Engine Code
M276Rebuild From
£6,500
Generation
X253 (2015–2022)
Engine Code
M139Rebuild From
£6,500
Generation
X254 (2022–present)
Exact price depends on condition and parts required — submit your reg for a fixed-price quote.
Mercedes GLC43 AMG 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 GLC43 AMG uses a completely different engine family from the V8 M178 fitted to the GLC-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 GLC43 AMGENGINE OPTIONS
Every GLC43 AMG is different. That's why we offer the right solution for your engine, your car and your budget.
REBUILDING YOUR GLC43 AMG ENGINE
We rebuild the engine your GLC43 AMG 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 GLC43 AMG 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 GLC43 AMG ENGINES
Restoring your existing engine to full working condition rather than replacing it outright. Our rebuild service covers this.
Learn moreREMANUFACTURED GLC43 AMG ENGINES
Built to original specification with updated components. That's consistent with what our rebuild service delivers on the M256.
Learn moreREPLACEMENT GLC43 AMG 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 GLC43 AMG 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 GLC43 AMG, 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 GLC43 AMG rebuild looks like.
Mercedes GLC43 AMG ENGINE REBUILD PROCESS
WHAT MERCEDES GLC43 AMG OWNERS SAY
WE COVER YOUREXACT VEHICLE
Enter your registration below and we'll confirm your GLC43 AMG has the M256, along with an exact rebuild price.
WHY MERCEDES GLC43 AMG OWNERS CHOOSE US
Engine matched using VIN or registration number — confirms M276 vs M139 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 No widely-reported engine issue for this variant — we still recommend a full inspection before any long journey.
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 GLC43 AMG
RECOVERY
Mercedes GLC-Class 63
DIAGNOSTICS
Mercedes GLC-Class
STRIPPED ENGINE
Mercedes GLC-Class S
TIMING CHAIN REPLACEMENT
Mercedes GLC43 AMG
IN FOR REBUILD
Mercedes GLC-Class C
REBUILD IN PROGRESS
HOW IT WORKS
SEND YOURREGISTRATION
RECEIVE YOURFIXED-PRICE QUOTE
WE RECOVERYOUR CAR
REBUILD &REFIT
Most GLC-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 GLC43 AMG 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 GLC43 AMG ENGINE
The GLC43 AMG has been part of the GLC-Class range since 2015, and across its two generations has used two different engines — from the M276 V6 through to today's M139 4-cylinder hybrid. The full breakdown by engine code is below.
We continue to rebuild and replace M256 engines for every GLC43 AMG on the road.
MERCEDES GLC43 AMG ENGINE CODES
M276 (X253)
A 3.0-litre V6 petrol fitted to the GLC43 AMG from 2015 to 2022 (X253 generation). No specific known issue confirmed for this application. We service it to the same standard as our other GLC43 AMG rebuilds.
Check Your M276 GLC43 AMGM139 (X254)
A 2.0-litre I4 hybrid petrol fitted to the GLC43 AMG from 2022 to present (X254 generation). This is a notable departure from the older V6, part of a wider AMG shift to hybridised 4-cylinder power. No specific known issue confirmed for this application — it's a newer engine and we treat it as such.
Check Your M139 GLC43 AMGMERCEDES GLC43 AMG ENGINE COMPATIBILITY
Because the GLC43 AMG spans two distinct engines across two generations, fitting the wrong replacement — or assuming an M276 part will work on an M139 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 GLC-Class quote — it protects you from paying for parts that don't fit your actual car.
MERCEDES GLC43 AMG ENGINES BY YEAR
From the R190's launch in 2023, the GLC43 AMG 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 GLC43 AMG 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 GLC43 AMG MODEL YEAR:
Mercedes GLC43 AMG
2015 Engine Rebuild
Mercedes GLC43 AMG
2016 Engine Rebuild
Mercedes GLC43 AMG
2017 Engine Rebuild
Mercedes GLC43 AMG
2018 Engine Rebuild
Mercedes GLC43 AMG
2019 Engine Rebuild
Mercedes GLC43 AMG
2020 Engine Rebuild
Mercedes GLC43 AMG
2021 Engine Rebuild
Mercedes GLC43 AMG
2022 Engine Rebuild
Mercedes GLC43 AMG
2023 Engine Rebuild
Mercedes GLC43 AMG
2024 Engine Rebuild
Mercedes GLC43 AMG
2025 Engine Rebuild
Mercedes GLC43 AMG
2026 Engine Rebuild
If your registration year isn't listed above, get in touch — we'll confirm availability directly against your reg.
MERCEDES GLC43 AMG ENGINE COSTS
A Mercedes GLC43 AMG engine rebuild starts from
£6,500
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 GLC43 AMG ENGINE SIZES
• Mercedes GLC43 AMG 3.0 Litre Engine (M256, I6)
MERCEDES GLC43 AMG FUEL TYPES
• Mercedes GLC43 AMG Petrol Mild Hybrid Engine Rebuilds
RELATED MERCEDES GLC-CLASS VARIANTS
Most Mercedes GLC-Class engine rebuilds are completed within 3-5 working days.
Nationwide recovery and collection available for all GLC-Class models.