CLC Class Diesel Engines
from £1,200 to £3,800
Rebuilt units from £1,500 · Common codes: OM646, OM642, OM646.980, OM642.852
Mercedes Benz ENGINE MARKETPLACE
Mercedes CLC Engine Replacement - Compare Prices & Save
Get quotes from trusted UK Mercedes CLC engine specialists. Compare reconditioned & used engines for CLC 160 to CLC 350 - M271 covered. Find the best value for your budget.
Supply & Fit Available
12-Month Warranty
Nationwide Delivery
100+ Suppliers
CLC Class Petrol Engines
from £1,100 to £3,500
Rebuilt units from £1,400 · Common codes: M271, M272, M271.950, M272.960
CLC Class V6 Performance Engines
from £2,200 to £4,500
Rebuilt units from £2,200 · Common codes: M272E35, M272E25, M272.960, M272.940
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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 CLC Class Replacement Engineto Finding the Best Mercedes Benz CLC 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 CLC Class Engine Replacement
The table below shows typical UK rebuilt engine replacement costs across different Mercedes Benz CLC Class variants, covering known failure causes, engine codes, and fuel types.
Average Market Prices
↻ Last updated: 4 Aug 26, 9:26
Customer Reviews
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Rated 4.8 out of 5 by 1,081 verified customers who sourced reconditioned and used Mercedes Benz CLC Class engines through EngineMarket.
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Variants We Cover
Mercedes Benz CLC Class Engine ReplacementAll Variants Covered
Mercedes Benz CLC Class CLC 220 CDI BlueEFFICIENCY
OM646.980 2.1L Diesel
Rebuilt Engines: £1,600-£3,400
Mercedes Benz CLC Class CLC 160
M271.910 1.8L Petrol
Rebuilt Engines: £1,200-£2,400
Mercedes Benz CLC Class CLC 230
M272.921 2.5L Petrol
Rebuilt Engines: £1,800-£3,500
Mercedes Benz CLC Class CLC 230 Sport
M272.921 2.5L Petrol
Rebuilt Engines: £1,850-£3,600
Mercedes Benz CLC Class CLC 350
M272.960 3.5L Petrol
Rebuilt Engines: £2,200-£4,200
Mercedes Benz CLC Class CLC 350 Sport
M272.960 3.5L Petrol
Rebuilt Engines: £2,300-£4,500
Not sure which variant your Mercedes Benz CLC Class is- Enter your registration number above - we’ll identify the exact sub-model, engine code and compatible replacement options instantly.
CLC Class
Engine Codes
Mercedes Benz CLC Class Engine CodesFull Technical Specifications & Replacement Guide
Every engine code fitted to the Mercedes Benz CLC 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 CLC Class variants.
OM646.981 / OM646.980 - 2.1L Diesel
Main replacement triggers are timing chain wear, EGR / cooling faults and turbo-control issues.
Compatible variants
CLC 200 CDICLC 200 CDI SportCLC 200 CDI BlueEFFICIENCYCLC 220 CDICLC 220 CDI SportCLC 220 CDI BlueEFFICIENCY
Avg. rebuilt price
£1,400 - £3,200
Supply only
Technical specifications
- Fuel type
- Diesel
- Engine size
- 2.1L
- Power output
- 122-150 hp
- Years fitted
- 2003-2011
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?
Can’t find your engine code- Enter your registration number above - we’ll instantly identify the exact unit, its technical specifications, and live replacement prices from UK Mercedes Benz CLC Class engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.
CLC Class
Common Problems
Mercedes Benz CLC Class Engine Problems - What It Costs to Fix & When Replacement Makes Sense
Mercedes Benz CLC Class M271 Timing Chain Failure - Why Petrol Engines Rattle on Startup
Mercedes Benz CLC Class M271 Timing Chain Failure
Most affected vehicles
Mercedes Benz CLC Class CLC 160CLC 180 Kompressor
Mercedes Benz CLC Class CLC 160, CLC 180 Kompressor, CLC 200 Kompressor, CLC 200 CGI (2008-2011, M271.910, M271.946, M271.950, M271.860)
Failure mileage range
45,000 - 80,000 miles
Typical failure window
Root cause
The M271 uses a single-row timing chain that stretches over time, combined with a plastic tensioner guide that loses hydraulic pressure. Cold starts produce a distinctive rattle as the chain slaps against the timing cover. If ignored, the chain can jump teeth, causing valve-to-piston contact and complete engine destruction.
Repair options & estimated costs (UK ranges)
| Repair tier | Dealer price | Specialist price | What it involves | Longevity / suitability |
|---|---|---|---|---|
| Minor - Preventative Timing Chain Replacement | £1,200 - £1,800 | £800 - £1,200 | Replacement of timing chain, tensioner, guides, and camshaft sprockets. Labour-intensive (8-10 hours) | 60,000+ miles. Only viable before chain jumps. Essential preventative maintenance |
| Full Replacement - Rebuilt / Reconditioned Engine | £3,500 - £5,500 | £1,800 - £3,200 | Supply & fit of rebuilt M271 with upgraded timing components, new oil pump, and bench testing | 60,000+ miles. The right choice if chain has jumped or engine has suffered valve damage |
Our recommendation
On a CLC Class worth £1,500-£4,000, preventative timing chain replacement is almost always the better value if caught early. Listen for cold-start rattle - the moment you hear it, book a specialist inspection. If the chain has already jumped, replacement is your only safe option. A specialist using upgraded timing components will outlast the original design.
Compare M271 timing chain replacement quotes for your Mercedes Benz CLC ClassReplacement Engine Options
Mercedes Benz CLC Class Engine TypesOptions, Costs & What to Expect
Every engine type for the Mercedes Benz CLC Class is available through our UK network with typical price ranges based on your exact variant, engine code and budget.
Mercedes Benz CLC Class Reconditioned Engines (Recon)£1,800 - £4,200((supply only))
Mercedes Benz CLC Class Rebuilt Engines£1,500 - £3,800((supply only))
Mercedes Benz CLC Class Used Engines£800 - £2,200((supply only))
Mercedes Benz CLC Class Remanufactured Engines£2,200 - £5,000((supply only))
Mercedes Benz CLC Class Refurbished Engines£1,100 - £2,800((supply only))
Compare Mercedes Benz CLC 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 CLC Class within hours.
Engine Sizes
Mercedes Benz CLC Class Engines by SizeFind the Right Displacement for Your Variant
Every displacement fitted to the Mercedes Benz CLC Class is listed below, with compatible engine codes, production years, power outputs and common failure notes.
The 2.1-litre OM646 turbodiesel was the sole diesel displacement offered across the entire CLC Class range from 2008 to 2011. It powered the high-volume CLC 200 CDI and CLC 220 CDI variants, with two power outputs sharing the same basic block and common-rail injection architecture. This engine represented Mercedes' push for efficiency in the compact executive segment, delivering strong torque and respectable economy.
⚙
Engine Code(s)
OM646.980, OM646.981
▣
Compatible Models (UK)
CLC 200 CDI (2008-2011), CLC 200 CDI Sport (2008-2011), CLC 200 CDI BlueEFFICIENCY (2009-2011), CLC 220 CDI (2008-2011), CLC 220 CDI Sport (2008-2011), CLC 220 CDI BlueEFFICIENCY
ϟ
Power output
Verified by registration
△
Common Failure Points
Swirl flap collapse into cylinders, injector seal leakage causing combustion knock, EGR valve clogging
Production Years: 2009-2011
Get quotes for Mercedes Benz CLC Class 2.1L diesel enginesMercedes Benz CLC Class Engines Fuel Type
Mercedes Benz CLC Class Engines by Fuel Type
Choose your Mercedes Benz CLC Class engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from the economical CLC 200 CDI to the performance-oriented CLC 350 Sport.
Mercedes Benz CLC Class Diesel Engines
DieselThe CLC Class diesel range relied exclusively on Mercedes' OM646 four-cylinder and OM642 V6 units, with the 2.1-litre four-cylinder dominating UK replacement enquiries due to swirl flap failures.
Common Mercedes Benz CLC Class Diesel Engine Families
- •OM646.980/981 - 2.1L four-cylinder (CLC 200 CDI, CLC 220 CDI), swirl flap collapse is the #1 failure driver
- •OM642.852 - 3.0L V6 (CLC 320 CDI), oil cooler seal leaks and turbo actuator failures dominate replacement demand
Found In
- •CL203 CLC Class (2008-2011) - OM646.980 (150hp), OM646.981 (122hp), OM642.852 (224hp)
Known For
- •Excellent motorway economy (50+ mpg on OM646 cars)
- •Swirl flap ingestion causing catastrophic engine damage on four-cylinder units
- •Oil cooler seal failure on V6 causing persistent external leaks
Typical Diesel Models
- •CLC 200 CDI
- •CLC 200 CDI Sport
- •CLC 220 CDI
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Mercedes Benz CLC Class Diesel Engines
DieselThe CLC Class diesel range relied exclusively on Mercedes' OM646 four-cylinder and OM642 V6 units, with the 2.1-litre four-cylinder dominating UK replacement enquiries due to swirl flap failures.
Common Mercedes Benz CLC Class Diesel Engine Families
- •OM646.980/981 - 2.1L four-cylinder (CLC 200 CDI, CLC 220 CDI), swirl flap collapse is the #1 failure driver
- •OM642.852 - 3.0L V6 (CLC 320 CDI), oil cooler seal leaks and turbo actuator failures dominate replacement demand
Found In
- •CL203 CLC Class (2008-2011) - OM646.980 (150hp), OM646.981 (122hp), OM642.852 (224hp)
Known For
- •Excellent motorway economy (50+ mpg on OM646 cars)
- •Swirl flap ingestion causing catastrophic engine damage on four-cylinder units
- •Oil cooler seal failure on V6 causing persistent external leaks
Typical Diesel Models
- •CLC 200 CDI
- •CLC 200 CDI Sport
- •CLC 220 CDI
Mercedes Benz CLC Class Petrol Engines
PetrolThe CLC Class petrol lineup spans supercharged M271 four-cylinders and naturally aspirated M272 V6 units, with timing chain failures on the 1.8L and balance shaft wear on the 2.5L/3.5L driving most replacement enquiries.
Common Mercedes Benz CLC Class Petrol Engine Families
- •M271.910/946/950 - 1.8L supercharged four-cylinder (CLC 160, CLC 180 Kompressor, CLC 200 Kompressor), single-row timing chain stretch is the dominant failure
- •M271.860 - 1.8L direct-injection CGI (CLC 200 CGI), carbon build-up on intake valves alongside timing chain issues
- •M272.921 - 2.5L V6 (CLC 230), balance shaft gear wear affects early production engines
Found In
- •CL203 CLC Class (2008-2011) - all petrol variants across four-cylinder and V6 configurations
Known For
- •Responsive supercharged delivery on Kompressor cars
- •Timing chain tensioner failure from 45,000 miles on M271 units
- •Balance shaft wear requiring engine-out repair on M272 V6 engines
Typical Petrol Models
- •CLC 160
- •CLC 180 Kompressor
- •CLC 200 Kompressor
Not sure which fuel type your Mercedes Benz CLC 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 CLC Class specialists.
Engine YearsGet quotes for 2008-2011 Mercedes Benz CLC Class replacement engines →
Mercedes Benz CLC Class Engines by YearWhat Was Fitted & WhenMercedes Benz CLC Class Engines by Year - What Was Fitted & When
The Mercedes Benz CLC Class was produced as a single generation (CL203) from 2008 to 2011, evolving through running changes rather than generational breaks - this timeline covers every engine fitted across that period.
⚙Key Changes
- ✓CL203 platform (previously C-Class Sports Coupe, 2001-2008) fully refreshed for CLC branding
- ✓M271 four-cylinder petrol engines offered with both supercharged (Kompressor) and direct-injection (CGI) configurations
- ✓OM646 four-cylinder diesel introduced as the efficiency-focused option
- ✓M272 V6 petrol and OM642 V6 diesel reserved for flagship variants
▣Main Engines
M271.910- 1.6L petrol (CLC 160 BlueEFFICIENCY)
M271.946- 1.8L supercharged petrol (CLC 180 Kompressor)
M271.950- 1.8L supercharged petrol (CLC 200 Kompressor)
M271.860- 1.8L direct-injection petrol (CLC 200 CGI)
M272.921- 2.5L V6 petrol (CLC 230)
▰Popular Models
- •Mercedes Benz CLC 200 CDI
- •Mercedes Benz CLC 220 CDI
- •Mercedes Benz CLC 200 Kompressor
- •Mercedes Benz CLC 180 Kompressor
- •Mercedes Benz CLC 350 Sport
🔧Known For
- ✓Single-generation model bridging the C-Class Sports Coupe and CLC branding
- ✓M271 timing chain tensioner failures drive most petrol replacement enquiries
- ✓OM646 swirl flap collapse is the #1 diesel failure, often requiring full replacement
- ✓M272 balance shaft wear affects V6 engines with serial numbers below 2729..30 468993
- ✓Lower entry price than equivalent C-Class made it a popular used buy
Engine Codes Covered:
M271.910M271.946M271.950M271.860M272.921M272.960OM646.981OM646.980OM646.963OM642.852Not sure which year your Mercedes Benz CLC 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 CLC Class specialists.
FAQ