Mercedes GLC CoupeEngine Rebuild— From £3,200
Model: GLC-Class
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 GLC Coupe Engine
Vehicle
Mercedes GLC Coupe
Model
GLC-Class
Variant
GLC Coupe
Fuel
Petrol, Petrol MHEV, Petrol PHEV, Petrol Hybrid, Diesel, Diesel MHEV
Engine
M274, M254, OM651, OM654, OM656, M276, M139, M177
Capacity
2.0L, 3.0L, 4.0L
Generation
X253 (2015–2022) · X254 (2022–present)
Rebuild From
£2,200
Not sure which engine you have?
The GLC COUPE 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 GLC CoupeEngine Rebuild Price
Starting From £2,200
Engine Code
M274 (4-cyl petrol)Rebuild From
£2,200
Generation
X253 (2015–2022)
Engine Code
M254 (4-cyl petrol MHEV)Rebuild From
£2,200
Generation
X254 (2022–present)
Engine Code
OM651 (4-cyl diesel)Rebuild From
£2,200
Generation
X253 (2015–early)
Engine Code
OM654 (4-cyl diesel)Rebuild From
£2,200
Generation
X253 (late)/X254 (2022–present)
Engine Code
OM656 (6-cyl diesel MHEV)Rebuild From
£2,800
Generation
X254 (2022–present)
Engine Code
M276 (6-cyl petrol, GLC43)Rebuild From
£3,200
Generation
X253 (2015–2022)
Engine Code
M139 (4-cyl hybrid, GLC43/GLC63)Rebuild From
£[MISSING: not established for X254]
Generation
X254 (2022–present)
Engine Code
M177 (V8, GLC63)Rebuild From
£6,500
Generation
X253 (2015–2022)
Exact price depends on condition and parts required — submit your reg for a fixed-price quote.
Mercedes GLC Coupe Known Issues by Engine
If your GLC Coupe has the OM651 diesel (early X253 generation, pre-facelift): injector seal leakage and timing chain wear is a well-documented pattern, shared with the C-Class family. We replace injector seals and timing chain components as standard on every OM651 rebuild.
If your GLC Coupe has the M177 V8 (X253 GLC63 AMG): valve seal and coolant system wear is a known AMG pattern. We replace valve seals, coolant components and timing chain components as standard on every M177 rebuild.
Source: Established M256 specialist pattern — timing chain, bearing and gasket wear across integrated-starter-generator inline-six units.
Mercedes GLC CoupeENGINE OPTIONS
Every GLC COUPE is different. That's why we offer the right solution for your engine, your car and your budget.
REBUILDING YOUR GLC COUPE ENGINE
We rebuild the engine your GLC COUPE 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 GLC COUPE 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 GLC COUPE ENGINES
Restoring your existing engine to full working condition rather than replacing it outright. Our rebuild service covers this.
Learn moreREMANUFACTURED GLC COUPE ENGINES
Built to original specification with updated components. That's consistent with what our rebuild service delivers on the M256.
Learn moreREPLACEMENT GLC COUPE 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 GLC COUPE 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 GLC COUPE, 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 GLC Coupe rebuild looks like.
Mercedes GLC Coupe ENGINE REBUILD PROCESS
WHAT MERCEDES GLC COUPE OWNERS SAY
WE COVER YOUREXACT VEHICLE
Enter your registration below and we'll confirm your GLC COUPE has the M256, along with an exact rebuild price.
WHY MERCEDES GLC COUPE OWNERS CHOOSE US
Engine matched using VIN or registration number — confirms your exact engine 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 GLC Coupe
RECOVERY
Mercedes GLC-Class 63
DIAGNOSTICS
Mercedes GLC-Class
STRIPPED ENGINE
Mercedes GLC-Class S
TIMING CHAIN REPLACEMENT
Mercedes GLC Coupe
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 GLC COUPE 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 GLC COUPE ENGINE
The GLC Coupe has been part of the GLC-Class range since 2015, and across its two generations has used multiple different engines — from the original M274 and OM651 units through to the current M254, OM654, OM656 and M139 hybrid setups. The full breakdown by engine code is below.
We continue to rebuild and replace M256 engines for every GLC COUPE on the road.
MERCEDES GLC COUPE ENGINE CODES
M274 (X253, 2015–2022)
A 2.0-litre four-cylinder petrol fitted to the GLC200 and GLC300 in the first-generation X253. No specific known issue confirmed for this application. We service it to the same standard as our other GLC Coupe rebuilds.
Check Your M274 GLC CoupeM254 (X254, 2022–present)
A 2.0-litre four-cylinder petrol with mild-hybrid technology, fitted to the GLC200 and GLC300 in the current X254 generation from 2023. No specific known issue confirmed for this application — it's a newer design. We service it to the same standard as our other GLC Coupe rebuilds.
Check Your M254 GLC CoupeOM651 (X253 early, 2015–early)
A 2.0-litre four-cylinder diesel fitted to early X253-generation GLC220d and GLC300d models. Known for injector seal leakage and timing chain wear — see the callout above. We replace injector seals and timing chain components as standard on every OM651 rebuild.
Check Your OM651 GLC CoupeOM654 (X253 late/X254, late–present)
A 2.0-litre four-cylinder diesel fitted to later X253 and all X254 GLC220d/GLC300d models. No specific known issue confirmed for this application — it's a newer design from the OM651. We service it to the same standard as our other GLC Coupe rebuilds.
Check Your OM654 GLC CoupeOM656 (X254, 2022–present)
A 3.0-litre inline-six diesel with mild-hybrid technology, fitted to the GLC400d in the current X254 generation. No specific known issue confirmed for this application — it's a newer design. We service it to the same standard as our other GLC Coupe rebuilds.
Check Your OM656 GLC CoupeM276 (X253, 2015–2022)
A 3.0-litre V6 petrol fitted to the GLC43 AMG in the first-generation X253. No specific known issue confirmed for this application — it's a well-established Mercedes V6. We service it to the same standard as our other GLC Coupe rebuilds.
Check Your M276 GLC CoupeM139 (X254, 2022–present)
A 2.0-litre four-cylinder hybrid petrol fitted to the GLC43 and GLC63 AMG in the current X254 generation. No specific known issue confirmed for this application — it's a very new design and should not inherit the M177/V8 story from the previous generation. We service it to the same standard as our other GLC Coupe rebuilds.
Check Your M139 GLC CoupeM177 (X253, 2015–2022)
A 4.0-litre V8 petrol fitted to the GLC63 AMG in the first-generation X253. Known for valve seal and coolant system wear — see the callout above. We replace valve seals, coolant components and timing chain components as standard on every M177 rebuild.
Check Your M177 GLC CoupeMERCEDES GLC COUPE ENGINE COMPATIBILITY
Because the GLC Coupe spans multiple distinct engines across two generations — including a significant switch for the AMG variants from the V8 M177 to the 4-cylinder hybrid M139 — we confirm your exact engine code before quoting or supplying anything:
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 GLC COUPE APPLICATIONS BY GENERATION
Generation
Chassis
Years
Engine Code
Fuel
MERCEDES GLC COUPE ENGINES BY YEAR
From the R190's launch in 2023, the GLC COUPE 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 GLC COUPE 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 GLC COUPE MODEL YEAR:
Mercedes GLC Coupe
2015 Engine Rebuild
Mercedes GLC Coupe
2016 Engine Rebuild
Mercedes GLC Coupe
2017 Engine Rebuild
Mercedes GLC Coupe
2018 Engine Rebuild
Mercedes GLC Coupe
2019 Engine Rebuild
Mercedes GLC Coupe
2020 Engine Rebuild
Mercedes GLC Coupe
2021 Engine Rebuild
Mercedes GLC Coupe
2022 Engine Rebuild
Mercedes GLC Coupe
2023 Engine Rebuild
Mercedes GLC Coupe
2024 Engine Rebuild
Mercedes GLC Coupe
2025 Engine Rebuild
Mercedes GLC Coupe
2026 Engine Rebuild
If your registration year isn't listed above, get in touch — we'll confirm availability directly against your reg.
MERCEDES GLC COUPE ENGINE COSTS
A Mercedes GLC Coupe engine rebuild starts from
£2,200
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 GLC COUPE ENGINE SIZES
• Mercedes GLC Coupe 3.0 Litre Engine (M256, I6)
MERCEDES GLC COUPE FUEL TYPES
• Mercedes GLC Coupe 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.