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GLE Class Marketplace
Mercedes GLE M264/OM654/M256 Engine SolutionsUK Specialists
Get quotes from trusted UK Mercedes GLE engine specialists. Compare reconditioned & used engines for GLE 300 to GLE 63 AMG - M264/OM654/M256 covered. Get a quote before it's too late.
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GLE Class AMG Engines- from £5,000 to £12,000
Rebuilt units from £5,800
Common codes: M177, M176, M256 (AMG 53)
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Instant engine replacement quote - 100% free, no obligationEngine replacement near me - UK-wide specialist networkCompare reconditioned, rebuilt & used engine pricesSupply & fit available - parts and labour from vetted specialistsInstant engine replacement quote - 100% free, no obligationEngine replacement near me - UK-wide specialist networkCompare reconditioned, rebuilt & used engine pricesSupply & fit available - parts and labour from vetted specialists
Instant engine replacement quote - 100% free, no obligationEngine replacement near me - UK-wide specialist networkCompare reconditioned, rebuilt & used engine pricesSupply & fit available - parts and labour from vetted specialistsInstant engine replacement quote - 100% free, no obligationEngine replacement near me - UK-wide specialist networkCompare reconditioned, rebuilt & used engine pricesSupply & fit available - parts and labour from vetted specialists
How It Works
3 Simple Steps3 Simple Stepsto Finding the Best Mercedes Benz GLE Class Replacement Engineto Finding the Best Mercedes Benz GLE Class Replacement Engine
12-Month Warranty
Supply & Fit Available
Nationwide Delivery
Trusted UK Suppliers
Most replacements completed within 3-5 days.
Live UK Engine Market Data
GLE Class Engine Replacement
What Are UK Drivers Paying for Mercedes Benz GLE Class Engine Replacement-
The table below shows typical UK rebuilt engine costs across Mercedes Benz GLE Class variants, covering documented failure causes, chassis generations, engine codes, and fuel types based on current market data.
Average Market Prices
Last updated: 4 Aug 26, 9:26
Customer Reviews
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Variants We Cover
Mercedes Benz GLE Class Engine ReplacementAll Variants Covered
Mercedes Benz GLE Class 350d
OM642 3.0L Diesel
Rebuilt Engines: £3,200-£4,500
Mercedes Benz GLE Class 400
M276 3.0L Petrol
Rebuilt Engines: £3,200-£4,000
Mercedes Benz GLE Class 350de
OM654 2.0L PHEV
Rebuilt Engines: £5,000-£7,500
Mercedes Benz GLE Class 400e
M274 2.0L PHEV
Rebuilt Engines: £5,000-£7,800
Mercedes Benz GLE Class 53 AMG
M256 3.0L MHEV
Rebuilt Engines: £5,500-£9,000
Mercedes Benz GLE Class 63 AMG
M177 4.0L V
Rebuilt Engines: £8,000-£12,000
Mercedes Benz GLE Class 63 S AMG
M177 4.0L V
Rebuilt Engines: £8,500-£14,000
Engine Codes
Mercedes Benz GLE Class Engine CodesMercedes Benz GLE Class Engine CodesFull Technical Specifications & Replacement Guide
Every engine code fitted to the Mercedes Benz GLE Class across all generations, with technical specs, compatible variants and trims, known failure points, and average rebuilt prices from UK specialists. Select any engine code to compare quotes.
Diesel Engines
Extracted from detailed diesel engine families across Mercedes Benz GLE Class variants.
Extracted from detailed diesel engine families across Mercedes Benz GLE Class variants.
Common Problems
Mercedes Benz GLE Class Engine Problems
The Mercedes Benz GLE Class spans two generations - W166 (2015-2019) and W167 (2019-present) - with distinct engine families carrying their own failure patterns. Diesel...
Every rebuilt engine includes a minimum 12-month unlimited mileage warranty.
1. OM642 V6 Diesel Timing Chain & Turbo Oil Seal Failure
Why W166 GLE 350d Engines Fail
Most Affected Vehicles
350d
GLE 350d 4MATIC
Production Years: 2015 - 2019
Engine: OM642 V6 diesel
Failure Mileage Range
Turbo oil seal 60,000-90,000 miles; Timing chain tensioner wear 80,000-120,000 miles
Typical failure window
Root Cause
The OM642 V6 diesel suffers from two primary failure modes. The turbocharger oil seal degrades, allowing engine oil to enter the exhaust - producing blue/white smoke and eventually catastrophic turbo failure. Simultaneously, the timing chain tensioner can lose hydraulic pressure, particularly on higher-mileage units, leading to chain rattle and potential jumping of timing if ignored .
Repair Options & Estimated Costs (UK ranges)
| Repair Tier | Dealer Price | Specialist Price | What It Involves | Longevity / Suitability |
|---|---|---|---|---|
Minor - Turbo Oil Seal Replacement Minor | £650 - £950 | £350 - £550 | Replace turbo oil seal, inspect turbo shaft play, clean EGR system | Addresses smoking issue; only suitable if turbo bearings are intact |
Intermediate - Full Turbocharger Replacement Intermediate | £1,800 - £2,500 | £1,100 - £1,600 | New or reconditioned turbocharger, oil seal, feed lines, gaskets | Resolves oil consumption and power loss; lasts 60k+ miles |
Major - Timing Chain & Tensioner Replacement Minor | £1,500 - £2,200 | £900 - £1,400 | Replace timing chain, tensioner, guides, camshaft sprockets | Essential if chain rattle present; prevents catastrophic engine failure |
Full Replacement - Rebuilt OM642 Engine Best Value | £5,500 - £7,500 | £3,200 - £4,500 | Supply & fit reconditioned OM642 with upgraded internal components, 12-month warranty | The only reliable solution if chain has jumped or turbo debris has entered engine |
Our Recommendation
Best next step for om642 v6 diesel timing chain & turbo oil seal failure
For smoking exhaust without loss of power, start with the turbo oil seal replacement at a specialist - the £350-£550 cost is a fraction of a full replacement. However, if you hear timing chain rattle on cold start, do not delay. Chain failure on an OM642 typically writes off the engine, with debris circulating through the oil system. On a GLE 350d worth £12,000-£18,000, a £1,100 specialist timing chain job is excellent preventative maintenance. If the engine has already suffered catastrophic failure, a rebuilt OM642 from a specialist is your most cost-effective route - dealer pricing for a new engine is economically unviable.
Don't Let Engine Failure Write Off Your Mercedes Benz GLE Class
A failed engine doesn't have to mean the end of your GLE. Whether you own a W166 350d with a smoking OM642 turbo or a W167 53 AMG with 48V system failure, EngineMarket makes it simple to compare prices from trusted UK Mercedes Benz GLE Class specialists. Every rebuilt engine we connect you with includes upgraded components designed to address the original failure point - metal timing guides instead of plastic, reinforced turbo cartridges, and proper EGR cooling solutions. With 12-month warranties, nationwide delivery, and supply & fit available across the UK, you can get back on the road without the main dealer premium.
Compare Mercedes Benz GLE Class Engine Replacement Prices Now →Mercedes Benz GLE Class Engine Problems
What It Costs to Fix & When Replacement Makes Sense
Replacement Engine Options
Mercedes Benz GLE Class Replacement Engine Types
Every engine type is available through our UK network with typical price ranges based on variant, engine code and budget.
Mercedes Benz GLE Class Reconditioned Engines (Recon)£3,500 - £7,500(supply only)
Mercedes Benz GLE Class Rebuilt Engines£4,000 - £9,000(supply only)
Mercedes Benz GLE Class Used Engines£1,800 - £4,500(supply only)
Mercedes Benz GLE Class Remanufactured Engines£4,500 - £10,000(supply only)
Mercedes Benz GLE Class Supply & Fit Engines
Fully managed service including engine supply, delivery to garage, fitting, fluids and first start. Collection available nationwide.
Typical Price
£600 - £1,200
(added to engine price)
Engine Sizes
Mercedes Benz GLE Class Engines by SizeFind the Right Displacement for Your Variant
Every displacement fitted to the GLE Class across W166 and W167 generations is listed below, with compatible engine codes, years and common failure notes.
The 2.0-litre four-cylinder diesel arrived with the W167 generation in 2019, replacing the older OM651 2.1-litre unit. Using Mercedes’ modular OM654 architecture with stepped bowl combustion and a variable geometry turbo, this engine offers 245hp in GLE 300d guise - remarkably high output for a four-cylinder diesel in this segment. It provides the entry point to the diesel GLE range, balancing respectable economy with sufficient power for a large premium SUV.
| ENGINE CODE(S) | OM654 (2019-2025) |
| COMPATIBLE MODELS (UK) | GLE 300d, GLE 300d 4MATIC |
| PRODUCTION YEARS | W167, 2019-2025 |
Common Failure Points
EGR valve, cooler clogging, coolant pump vacuum circuit leaks, camshaft position sensor failure causing intermittent stalling
Not sure which engine size your Mercedes Benz GLE Class needs- Enter your registration number above - we’ll identify the exact displacement, engine code and compatible replacement options instantly. All engines supplied through EngineMarket include a minimum 12-month unlimited mileage warranty from UK Mercedes Benz GLE Class specialists.
Mercedes Benz GLE Class Engines Fuel Type
Mercedes Benz GLE Class Engines by Fuel Type
Choose your Mercedes Benz GLE Class engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from the economical GLE 300d to the fire-breathing GLE 63 S AMG.
Diesel engines dominate UK GLE replacement enquiries, spanning the OM651 four-cylinder in W166 250d models through to the OM642 V6 in the 350d and the advanced OM656 inline-six in W167 400d variants.
Common Mercedes Benz GLE Class Diesel Engine Families
OM651
2.1-litre four-cylinder, entry-level W166 GLE 250d, known for timing chain stretch at higher mileage
OM642
3.0-litre V6, backbone of W166 GLE 350d, notorious for turbo oil seal failure and smoking exhaust
OM654
2.0-litre four-cylinder, modern modular diesel in W167 GLE 300d, EGR clogging issues
OM656
2.9-litre inline-six, premium diesel in W167 GLE 350d and 400d, EGR cooler cracks subject to recall
Found In
W166 (2015-2019)
OM651 (250d), OM642 (350d)
W167 (2019-2025)
OM654 (300d), OM656 (350d, 400d)
Known For
Strong motorway torque and genuine long-distance towing capability
OM642 turbo oil seal failure causing blue/white smoke from 60k miles
OM656 EGR cooler cracks leading to coolant loss and fire risk recalls
High UK replacement demand on GLE 350d (OM642) and 400d (OM656)
Typical Diesel Models
GLE 250dGLE 300dGLE 350dGLE 400d
Not sure which fuel type your Mercedes Benz GLE Class has- Enter your registration number above to instantly identify your engine code, fuel system and compatible replacement options - all backed by a minimum 12-month unlimited mileage warranty from UK Mercedes Benz GLE Class specialists.
Engine Years
Mercedes Benz GLE Class Engines by YearWhat Was Fitted & When
From the 2011 ML-Class launch through the 2015 GLE rebrand to today‘s W167, this section maps every major engine change so you can identify your exact unit and compare rebuilt prices from UK specialists.
2011-2015 - W166 M-Class Launch
Major Platform Change
The W166 M-Class launched in late 2011 as the third-generation ML, bringing Euro 6 diesel compliance and a new family of V6 petrol engines before the 2015 rebrand to GLE.
Key Changes
All-new platform with 7G-Tronic Plus gearbox across all models
First four-cylinder diesel (OM651) in an ML - 204hp with 500Nm torque
M276 V6 petrol engines replace older M272 units with direct injection
M157 5.5-litre V8 biturbo powers the ML 63 AMG flagship
Known For
OM651 timing chain stretch is the most common failure on early cars
OM642 suffers oil cooler leaks and swirl flap failures at higher mileages
M276 balance shaft issues began appearing on later V6 units
7G-Tronic Plus is robust but must be serviced every 60k miles
Main Engines
Popular Models
ML 250 BlueTEC 4MATIC
ML 350 BlueTEC 4MATIC
ML 350 4MATIC
ML 63 AMG
Get quotes for 2011-2015 Mercedes Benz GLE Class replacement engines
2011-2015 - W166 M-Class Launch
Major Platform Change
The W166 M-Class launched in late 2011 as the third-generation ML, bringing Euro 6 diesel compliance and a new family of V6 petrol engines before the 2015 rebrand to GLE.
Key Changes
All-new platform with 7G-Tronic Plus gearbox across all models
First four-cylinder diesel (OM651) in an ML - 204hp with 500Nm torque
M276 V6 petrol engines replace older M272 units with direct injection
M157 5.5-litre V8 biturbo powers the ML 63 AMG flagship
Known For
OM651 timing chain stretch is the most common failure on early cars
OM642 suffers oil cooler leaks and swirl flap failures at higher mileages
M276 balance shaft issues began appearing on later V6 units
7G-Tronic Plus is robust but must be serviced every 60k miles
Main Engines
Popular Models
ML 250 BlueTEC 4MATIC
ML 350 BlueTEC 4MATIC
ML 350 4MATIC
ML 63 AMG
Common Replacement Enquiries
OM642 oil cooler leak repair
ML 350 BlueTEC turbo failure
M276 timing chain replacement cost
Get quotes for 2011-2015 Mercedes Benz GLE Class replacement engines
FAQ
Mercedes Benz GLE Class Engine ReplacementFrequently Asked Questions
Question 1How much does a Mercedes Benz GLE Class engine replacement cost in the UK-
Rebuilt GLE engine prices range from £2,200 for a 250d OM651 unit to over £10,000 for an AMG V8. Supply-only recon engines typically cost £3,200-£6,800 depending on engine code.
- OM651 (250d): £2,200-£2,600 for a reconditioned unit
- OM642 (350d): £3,200-£4,500 for V6 diesel recon
- OM656 (400d): £5,500-£6,800 due to complex twin-turbo design
- M276 V6 petrol: £3,200-£4,000, but verify balance shaft history first
- Dealer fitted prices add £1,500-£3,000 in labour vs specialist supply & fit
Question 2What are the most common Mercedes Benz GLE Class engine problems by engine code-
OM642 V6 diesel turbos fail from oil seal leaks (£350-£1,600 repair). M276 V6 petrol timing chain guides wear (£1,200-£1,800 specialist fix). OM656 EGR coolers crack (recall affected 2019-2024 models).
- OM642: Turbo oil seal failure causes blue/white smoke at 60k-90k miles
- M276: Balance shaft and plastic timing chain guide wear from 80k miles
- OM656: EGR cooler cracks prompt fire risk recall across 2017-2021 diesel models
- OM651: Timing chain stretch on 250d units at 80k-100k miles
- M256: 48V starter-generator failures immobilise GLE 450 and 53 AMG
Question 3Is it worth replacing the engine in my Mercedes Benz GLE Class-
On a GLE worth £12,000-£18,000 with OM642 or OM651 failure, specialist replacement at £3,200-£4,500 is usually worthwhile. On older high-mileage W166 petrol models, weigh repair costs against vehicle value.
- GLE 250d/350d (W166) with body mileage under 120k: replacement makes sense
- One forum owner faced £26k-£28k dealer quote vs £33k vehicle value - specialist saved 30-40%
- M276 petrol replacement at £3,200-£4,000 viable for GLE 400 worth £10k-£15k
- Dealer long block + labour = £20k+; specialist recon + fit = £4k-£7k
- Get independent shop quotes before committing to dealer pricing
Question 4Which Mercedes Benz GLE Class engine is the most reliable-
The OM642 V6 diesel in GLE 350d (2015-2019) is widely considered the most reliable GLE engine when properly maintained, despite known turbo oil seal issues. The OM654 in GLE 300d is also solid but watch for EGR clogging.
- OM642: Robust V6 with generous torque - best balance of reliability and running costs
- OM651 four-cylinder diesel: Decent but timing chain needs monitoring after 180,000 km
- M276 petrol V6: Very smooth and free from diesel DPF/EGR issues, but timing chain risk exists
- M157 AMG V8: Reliable if maintained but very high running costs
- Best used buy: GLE 350 CDI (OM642) - durable, enjoyable and reliable
Question 5What causes OM642 turbo failure on my Mercedes Benz GLE 350d-
The turbo oil seal degrades from heat cycling, allowing engine oil to enter the exhaust. This produces blue/white smoke and can lead to complete turbo failure. Boost pressure actuator issues also cause intermittent limp mode.
- Failed turbo oil seal is the primary cause of smoking exhaust on OM642
- Boost pressure regulator (actuator) can cause jerking under heavy acceleration
- Intermittent codes like 2510 appear without check engine light
- Actual boost values fluctuating between 34-90% indicates actuator wear
- Replacement cost: £350-£550 for seal-only, £1,100-£1,600 for full turbo
Question 6How long does a Mercedes Benz GLE Class engine last-
Well-maintained OM642 and OM656 diesel GLE engines regularly exceed 150,000-200,000 miles. Petrol M276 V6 units typically reach 120,000-150,000 miles with proper timing chain maintenance. M256 mild hybrid longevity less proven.
- OM642 V6 diesel: 150k-200k+ miles with regular servicing
- OM651 four-cylinder: 120k-150k miles before timing chain attention needed
- M276 V6 petrol: 120k-150k miles but timing chain guides are the weak point
- Service interval is 12 months or 15,500 miles - do not extend
- High-mileage OM642 examples running strong at 20,000+ miles per year
Question 7Should I buy a petrol or diesel Mercedes Benz GLE Class-
Diesel (OM642/OM656) is better for high-mileage motorway driving with 30-35mpg achievable. Petrol (M276) suits lower-mileage urban use but returns just 8-9 km/l (approx 22-25mpg). Diesel replacement demand is significantly higher in the UK.
- Diesel GLE 350d/400d: Superior torque and towing capability, 30-35 mpg motorway
- Petrol GLE 350/400: Smoother, quieter, no DPF/EGR diesel issues but fuel consumption high
- Urban petrol drivers report approximately 8.9 km/l fuel economy
- Petrol engines simpler to maintain but fuel costs add up for high-mileage users
- GLE 350 CDI recommended as the best all-rounder for reliability and economy
Question 8What is the 48V mild hybrid system on Mercedes Benz GLE 450 and 53 AMG-
The M256 engine uses a 48V integrated starter-generator (ISG) and lithium-ion battery for electric boost and coasting. When the 48V battery fails, the vehicle won't start and requires specialist replacement costing £1,800-£2,500.
- 48V system provides EQ Boost: extra 22hp and torque assistance
- Also powers the electric auxiliary compressor for lag-free turbo response
- Failed 48V battery leaves the car completely immobilised - no jump start possible
- Replacement requires Mercedes XENTRIS diagnostics and coding
- Dealer pricing £2,200-£3,500; specialists typically £1,800-£2,500
Question 9Does Mercedes Benz GLE Class timing chain replacement need doing- How much does it cost-
Yes, the M276 petrol V6 has plastic timing chain guides that degrade from 80,000 miles. Replacement cost is £1,200-£1,800 at a specialist versus £1,800-£2,600 at a dealer. Cold start rattle is the classic warning sign.
- M276 V6 uses a timing chain, not a belt - but plastic guides fail
- Genuine Mercedes timing chain part number 276-050-24-16 for M276 engines
- Cold start rattle indicates tensioner or guide wear
- Ignoring rattle leads to timing jump and piston-valve contact
- Preventative replacement saves £2,000+ vs full engine replacement
Question 10Can I fit a GLE 63 AMG engine into my standard Mercedes Benz GLE-
Theoretically possible but prohibitively expensive. The M177 V8 requires different engine mounts, gearbox, cooling system, wiring harness, ECU, and transmission. Most specialists advise selling your GLE and buying an AMG instead.
- Different engine mounts, subframe, and transmission required
- Entire wiring harness and all ECUs must be swapped
- Cooling system is completely different on V8 models
- Brakes, suspension, and exhaust all need upgrading
- Labour alone often exceeds £10,000 plus parts
Why Choose Us
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