GLE Class Diesel Engines
from £2,000 to £6,500
Rebuilt units from £3,200 · Common codes: OM642, OM656, OM654
Mercedes Benz ENGINE MARKETPLACE
Mercedes GLE M264/OM654/M256 Engine Solutions - UK 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.
Supply & Fit Available
12-Month Warranty
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100+ Suppliers
GLE Class Petrol Engines
from £1,800 to £5,500
Rebuilt units from £2,800 · Common codes: M276, M256, M274
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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Supply & 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 specialistsHow 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
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
GLE Class
Engine Codes
Mercedes 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.
OM642 - 3.0L Diesel
Main replacement triggers are timing chain wear, EGR / cooling faults and turbo-control issues.
Compatible variants
GLE 350dGLE 350d 4MATICGLE 350d AMG Line
Avg. rebuilt price
£3,200 - £4,500
Supply only
Technical specifications
- Fuel type
- Diesel
- Engine size
- 3.0L
- Power output
- 258 hp (350d)
- Years fitted
- 2015-2019
Common failures
- ●Main replacement triggers are timing chain wear, EGR / cooling faults and turbo-control issues.
- ●Confirm exact engine code and fitment before ordering.
- ●Ask for warranty and supply & fit terms.
Not sure which engine code?
GLE Class
Common Problems
Mercedes Benz GLE Class Engine Problems - What It Costs to Fix & When Replacement Makes Sense
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 variants dominate UK demand, particularly the OM642 V6 in the 350d and the OM656 inline-six in the 400d, while petrol models face timing chain vulnerabilities across M276 V6 units . Every...
OM642 V6 Diesel Timing Chain & Turbo Oil Seal Failure - Why W166 GLE 350d Engines Fail
OM642 V6 Diesel Timing Chain & Turbo Oil Seal Failure
Most affected vehicles
Mercedes Benz GLE Class 350dGLE 350d 4MATIC (2015-2019
Mercedes Benz GLE Class 350d, GLE 350d 4MATIC (2015-2019, 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 | £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 | £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 | £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 | £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
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.
Compare rebuilt OM642 Mercedes Benz GLE Class engine prices nowReplacement Engine Options
Mercedes Benz GLE Class Engine TypesOptions, Costs & What to Expect
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 Refurbished Engines£2,200 - £5,000((supply only))
Compare Mercedes Benz GLE Class engine prices with vetted UK suppliers
All engine types include a minimum 12-month unlimited mileage warranty when sourced through EngineMarket. Prices are typical UK market ranges based on historical quote data from our network and depend on exact engine code, variant, mileage and supplier. Use our free comparison tool above - enter your registration to get tailored quotes for your specific Mercedes Benz GLE Class within hours.
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
ϟ
Power output
Verified by registration
△
Common Failure Points
EGR valve, cooler clogging, coolant pump vacuum circuit leaks, camshaft position sensor failure causing intermittent stalling
Production Years: W167, 2019-2025
Get quotes for Mercedes Benz GLE Class 2.0L diesel enginesMercedes 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.
Mercedes Benz GLE Class Diesel Engines
DieselDiesel 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
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
Typical Diesel Models
- •GLE 250d
- •GLE 300d
- •GLE 350d
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Mercedes Benz GLE Class Diesel Engines
DieselDiesel 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
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
Typical Diesel Models
- •GLE 250d
- •GLE 300d
- •GLE 350d
Mercedes Benz GLE Class Petrol Engines
PetrolPetrol GLE models range from naturally aspirated V6 units in the W166 generation through to advanced mild-hybrid inline-six engines and fire-breathing AMG V8s in the current W167 range.
Common Mercedes Benz GLE Class Petrol Engine Families
- •M276 DE35 - 3.5-litre naturally aspirated V6, W166 GLE 350, balance shaft and timing chain guide wear
- •M276 DE30 - 3.0-litre biturbo V6, W166 GLE 400, timing chain degradation from 80k miles
- •M256 - 3.0-litre inline-six with 48V mild hybrid, W167 GLE 450 and 53 AMG, ISG and turbo bearing failures
Found In
- •W166 (2015-2019) - M276 (GLE 350, 400), M157 (GLE 63 / 63 S)
- •W167 (2019-2025) - M256 (GLE 450, 53 AMG), M176 (GLE 580), M177 (GLE 63 / 63 S)
Known For
- •Refined V6 and V8 power delivery across all generations
- •M276 plastic timing chain guide failures are the number one petrol replacement driver
- •M256 48V mild hybrid system adds complexity and specialist repair requirements
Typical Petrol Models
- •GLE 350
- •GLE 400
- •GLE 450
Mercedes Benz GLE Class Plug-In Hybrid (PHEV) Engines
PHEVMercedes introduced PHEV variants to the W167 GLE range in 2020, offering diesel-electric (350de) and petrol-electric (400e) configurations with up to 68 miles of electric-only range.
Mercedes Benz GLE Class PHEV Engine Codes
- •OM654 - 2.0-litre diesel PHEV (GLE 350de), combined 315hp
- •M274 - 2.0-litre petrol PHEV (GLE 400e), combined 381hp
- •100kW electric motor integrated between engine and 9G-TRONIC gearbox
Found In
- •GLE 350de (diesel PHEV) - W167, 2020-2025
- •GLE 400e (petrol PHEV) - W167, 2020-2025
Important Notes
- •PHEV engine replacement requires specialist hybrid system isolation and re-commissioning
- •High-voltage battery health assessment recommended during any engine swap
- •Replacement availability is more limited than conventional petrol or diesel units
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 YearsGet quotes for 2011-2015 Mercedes Benz GLE Class replacement engines →
Mercedes Benz GLE Class Engines by YearWhat Was Fitted & WhenMercedes Benz GLE Class Engines by Year - What 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.
⚙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
▣Main Engines
OM651- 2.1 litre diesel (ML 250 BlueTEC)
OM642- 3.0 litre V6 diesel (ML 350 BlueTEC)
M276DE35 - 3.5 litre V6 petrol (ML 350)
M278- 4.7 litre V8 biturbo petrol (ML 500)
M157- 5.5 litre V8 biturbo petrol (ML 63 AMG)
▰Popular Models
- •ML 250 BlueTEC 4MATIC
- •ML 350 BlueTEC 4MATIC
- •ML 350 4MATIC
- •ML 63 AMG
🔧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
Engine Codes Covered:
OM651OM642M276 DE35M278M157Not sure which year your Mercedes Benz GLE Class was built- Enter your registration number and we‘ll identify the exact engine, model year, and compatible replacement options instantly - all backed by a minimum 12-month warranty from UK Mercedes Benz GLE Class specialists.
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