Mercedes S-Class C215 Engines — The Complete UK Guide
Every engine fitted to the second-generation CL-Class coupé — from the bulletproof M113 V8 to the thunderous M275 twin-turbo V12 and the rare 6.3-litre M137. Real UK replacement costs, honest reliability data, and the pre- and post-facelift engine changes that defined this flagship. Backed by 880+ real UK M113-related enquiries in 2025 [MB-VERIFIED].
Explore C215 Engines
Mercedes S-Class C215 Engine Codes — The Complete Database
Every engine fitted to the C215 coupé — including the 2002 facelift that brought the M275 twin-turbo V12 and the M113K supercharged V8.
Overview
Mercedes S-Class C215 — Overview
The C215 is the second generation of the Mercedes-Benz CL-Class, introduced in 1998 as the flagship two-door, four-passenger coupé.
Based on the W220 S-Class but with an 8-inch shorter wheelbase, it featured extensive use of aluminium, magnesium and composite materials for a 340 kg weight reduction over its predecessor. A 2002 facelift brought revised styling and a new engine line-up, including the M113K supercharged V8 and the M275 twin-turbo V12.
Key Facts
Platform
Mercedes-Benz W220 (S-Class)
Predecessor
Mercedes-Benz CL-Class C140 (W140-based)
Successor
Mercedes-Benz CL-Class C216
Sibling body styles in this generation
None (C215 is a standalone coupé; shares platform with W220 S-Class saloon)
Market Intelligence
The M113 V8 engine family remains one of the most-requested Mercedes engines in our data, with enquiries concentrated on the CL 500 and CL 55 AMG as these grand tourers enter classic-car territory.
Best & Worst Engines
Best Diesel Overall
Omitted
“no diesel engine fitted to the C215.”
Who it's for:
Best Petrol Overall
M113.960 (CL 500, 5.0L V8)
“The 5.0-litre M113 V8 is arguably the most reliable modern Mercedes engine ever built — naturally aspirated, simple SOHC design, and proven to exceed 200,000 miles with routine maintenance. Thermostat and MAF sensor issues are its only real demands.”
Who it's for: buyers who want bulletproof V8 reliability in a flagship coupé.
Highest Risk
M137.970 (pre-facelift CL 600, 5.8L V12)
“The M137 V12 is possibly the least reliable modern Mercedes engine — oil cooler O-ring failures are a £1,000+ repair, and the complex 12-cylinder architecture makes it a specialist-only proposition. Mercedes replaced it with the M275 for good reason.”
Who it's for: collectors who accept the risks of a rare V12 flagship.
Most Expensive Failure
M275.980 (CL 65 AMG, 6.0L twin-turbo V12)
“The 612 bhp twin-turbo V12 delivers tyre-shredding torque and a soundtrack to match, but it's an ageing AMG flagship — turbocharger wear, coil pack failure and the sheer cost of V12 parts make it the most expensive engine in the range to maintain.”
Who it's for: AMG collectors with deep pockets and full service history.
Best Value
M113.960 (CL 500)
“The entry-level V8 offers genuine grand-touring performance (6.1s to 60mph) with significantly lower running costs than any V12 — and sits in the same used price bracket as lesser cars. It's the sweet spot of the range.”
Who it's for: buyers who want the C215 experience without the V12's running costs.
Most Overlooked
M113.991 (post-facelift CL 55 AMG Kompressor, 493 bhp)
“The supercharged 5.4-litre V8 is often overshadowed by the V12s, but it offers genuine AMG performance (4.7s to 60mph) with none of the M137's reliability issues — and the supercharger whine is addictive.”
Who it's for: buyers who want AMG performance without the V12's complexity.
Mercedes S-Class C215 — Ownership Economics
The C215 rule
A £3,500–£6,000 M113 recon against a £5,000–£15,000 C215 sits at 25–120% of the car's value — on sub-£6,000 examples, it often approaches or exceeds our 70% Mercedes-Benz threshold. The M275 V12 recon at £6,000–£13,000 against a £8,000–£25,000 CL 600/65 is 25–160% — viable only on well-maintained, higher-value examples. These are ageing flagship coupés; value the car first, because the engine can easily be worth more than the car on budget examples.
Key Takeaways
Which C215 Costs Least To Own?
CL 500 (M113) — cheapest recon, best reliability, simplest maintenance.
Which C215 Costs Most To Own?
CL 65 AMG — V12 twin-turbo parts and specialist labour costs.
Which C215 Is Best Value?
CL 500 — V8 grand touring without the V12's running costs.
Common Problems
C215 Engine Replacement Costs — By Engine and Condition
No Generation variance from the baseline figures — the C215 shares its W220 platform with the S-Class saloon, and engine-bay access is consistent across the range.
Core Variants
Core Variants
Scope note: All variants listed are C215 CL-Class coupé only (1998–2006). The W220 S-Class saloon (1998–2005) shares most of these engines but is covered on its own Generation Page. Note the pre-facelift (1998–2002) and post-facelift (2002–2006) engine line-up differences: pre-facelift cars use M113 V8s and M137 V12s; post-facelift cars use M113K supercharged V8s and M275 twin-turbo V12s.
Market Intelligence
Most Requested E90 Engines (2025)
- 1.1. M113.960 (CL 500) — pattern data
- 2.2. M275.950 (CL 600 facelift) — pattern data
- 3.3. M137.970 (CL 600 pre-facelift) — pattern data
Most Requested E90 Variants
- 1.1. CL 500
- 2.2. CL 600
- 3.3. CL 55 AMG
Average E90 Replacement Cost
£3,500–£13,000 [MB-QUOTE]
Most Common E90 Failures
- 1.1. M137 oil cooler O-ring failure
- 2.2. M113 thermostat & MAF sensor failure
- 3.3. M275 coil pack & turbo actuator failure
Mercedes CL 600 C215 (M137)
5
enquiries
Mercedes CL 500 C215 (M113)
4
enquiries
Mercedes CL 55 AMG Kompressor C215 (M113K)
3
enquiries
FAQ
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Trusted C215 Engine Suppliers
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UK Engine Replacement Services for C215
covering every variant from CL 500 to CL 65 AMG, with supply‑only or full supply‑&‑fit available nationwide.
Find the best Mercedes S-Class C215 engine replacement UK drivers rely on. Compare real prices from trusted specialists on EnginesMarket today — whether you need a proven V8, a supercharged AMG, or a thunderous V12, we'll help you keep your flagship coupé on the road.
