Mercedes-Benz CLC200 / CLC220 CDI Engine Replacement — Compare Prices & Get Quotes
Get quotes today from trusted UK Mercedes-Benz CLC CDI specialists. Compare reconditioned, rebuilt and used 2.2-litre four-cylinder turbo-diesel engines — OM646 variants across the CL203 generation — supply & fit available nationwide.
The CLC200 / CLC220 CDI THROUGH TIME — Era Map
Four generations. Four eras. One guide to reliability, costs and what really matters.
Era Note
2.2L four-cylinder diesel — CLC200: 122 bhp, 270 Nm; CLC220: 150 bhp, 340 Nm; injector seal leaks ("black death") and timing chain stretch are the primary concerns
Why use this era map?
This table is the single source every other section on this page matches — Sections 2, 4 and 6 reference it rather than restating conflicting figures.
Mercedes-Benz CLC200 / CLC220 CDI Engine Replacement Costs
Figures above reflect current CLC CDI replacement costs. This badge spans only one engine era — see the Era Map above.
Labour estimate: Fitting a CLC CDI engine typically takes 10–14 hours at £65–£95/hr (independent) or £110–£160/hr (London/SE dealer).
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CLC200 / CLC220 CDI — Repair, Buy, or Replace?
Every 320d has a story. Make the right call with clear data, real-world costs, and honest guidance from UK specialists.
Can It Be Repaired?
Buying This CLC CDI? Check These First
Buy If
- Injector seals replaced recently — check for no black death residue
- No cold-start rattling (timing chain tensioner health)
- Full service history with regular oil changes — the OM646 can reach 500,000 miles if properly maintained
- EGR valve and turbo actuator recently serviced
- No loss of power or warning lights
Avoid If
- Black carbon deposits around injectors — injector seal leaks ("black death") are developing
- Cold-start rattling and no timing chain history — budget for chain work
- No service history — the OM646 is sensitive to oil quality
- EGR warning light or loss of power — EGR or turbo issues likely
- Engine warning light with no diagnosis — may indicate timing, injector or sensor problems
Closing Verdict
The CLC200 and CLC220 CDI are Mercedes-Benz's stylish compact coupés from the CL203 generation — powered by the 2.2-litre OM646 four-cylinder diesel. The CLC200 produces 122 bhp and 270 Nm, while the CLC220 produces 150 bhp and 340 Nm. The OM646 is one of Mercedes' most durable diesel engines — with proper maintenance, examples have reached close to 500,000 miles. However, it has well-documented vulnerabilities: injector seal leaks ("black death"), timing chain stretch, EGR valve clogging, and turbo actuator failure. With typical CLC values ranging from £3,000 to £8,000, an engine replacement is a significant investment — a well-maintained example with documented injector seal and timing chain history is the safest choice.
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Buying Checklist
Before you buy a used Mercedes-Benz CLC200 / CLC220 CDI (or before you commit to an engine replacement), check these:
Injector Seals — Inspect for black carbon deposits around injectors ("black death" warning) — see the map above
Cold Start — Listen for rattling or clattering for 2–5 seconds (timing chain tensioner warning)
Service History — Including regular oil changes (critical for timing chain longevity)
EGR System — Check for any loss of power or warning lights; EGR clogging is common
Turbo Health — Test acceleration; any lag or hesitation may indicate actuator issues
Engine Warning Light — Have codes read; unresolved issues may indicate timing, injector, EGR or sensor problems
Crankshaft Sensor — Check for intermittent starting issues; crankshaft position sensor failure is common
MOT History — Check for emissions-related failures
Buy smart. Drive with confidence.
A few checks today can save thousands tomorrow. Use this checklist to avoid the most common 320d pitfalls.
Engine Codes
This table's rows match Section 1B's Era Map exactly.
OM646.962 / OM646.963
Technical Specs
OM646.963 — CLC CDI→ Compare CLC CDI engine prices for your CLC-Class
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Market Intelligence
Most Common Failure
Injector seal leaks ("black death") — the most frequent CLC CDI engine enquiry
Average Enquiry Mileage
60,000
–90,000 miles
[PATTERN DATA]
Average Replacement Cost
£4,000
–£5,000 reconditioned, supply only
[PLACEHOLDER]
Most Requested Engine Code
OM646.962 / OM646.963
[PATTERN DATA]
Peak Enquiry Season
Winter — cold starts expose timing chain wear
[PATTERN DATA]
Regional Demand
PATTERN DATA
Regional Demand Breakdown
Frequently Asked Questions
All prices are indicative UK market ranges based on historical quote data from our network of engine specialists. Actual costs vary by variant, engine condition, damage severity and workshop location. Use our free comparison tool to get tailored quotes. Every engine supplied through EnginesMarket carries a minimum 12-month unlimited-mileage warranty — always confirm terms with your chosen supplier.
Why UK Mercedes-Benz CLC200 / CLC220 CDI Owners Trust MercedesEngine.uk
Trusted CLC CDI Engine Suppliers
every garage and engine rebuilder in our network is vetted, rated and reviewed by real CLC200 and CLC220 CDI owners, as part of the Engine Finders network, covering the OM646 across the CL203 generation.
Compare CLC CDI Engine Replacement Companies
see prices, warranty terms and supply & fit options side-by-side before you commit. We cover the 2.2-litre four-cylinder diesel specifically, with specialists who understand the injector seal ("black death") issues, timing chain vulnerabilities, and the unique requirements of the CLC-Class.
UK Engine Replacement Services for CLC CDI
supply-only or full supply & fit available nationwide, covering every generation of this badge since 2008, with a 12-month warranty as standard across our network.
Find the best Mercedes-Benz CLC200 / CLC220 CDI engine replacement UK owners rely on. Compare prices from trusted specialists on EnginesMarket today and get your CLC-Class back on the road with confidence.
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No hidden fees
No Obligation
Get quotes with zero pressure
UK Specialists
20+ vetted experts
12-Month Warranty
As standard
Nationwide Delivery
Supply & fit available