Mercedes-Benz C-Class C 300 (W205) Engine Replacement - M274.920 & M264.920 Petrol Engines

Mercedes-Benz C-Class C 300 (W205) Engines for Sale | Engine Finders

If you're looking for a reconditioned Mercedes-Benz C-Class C 300 (W205) engine, a rebuilt unit, or a reliable replacement, you're in the right place. The Mercedes-Benz C-Class C 300 (W205) badge spans more than one engine across its production run (M274.920 / M264.920), so getting the exact code right matters more than the badge or year alone. Engine Finders matches UK buyers searching for 'engine for sale', 'reconditioned engine price' or 'engine replacement cost' for this model with vetted suppliers who carry the correct unit for your exact vehicle — supply-only or supply-and-fit, used or professionally reconditioned, whichever suits your budget and timeline.

Mercedes-Benz C-Class C 300 (W205) Replacement Engines

Whether you call it a rebuilt engine, a remanufactured unit, or a reconditioned replacement, the work involved is broadly the same across every application: a full strip-down, inspection against factory tolerances, replacement of wear parts, and bench testing before it's fitted or dispatched to you.

C 300 (W205) Models & Engine Codes

The W205 C 300 uses a 1,991 cc turbocharged four-cylinder, which many owners describe simply as the C300 engine size of two litres, but the engine behind that size changed at the 2018 facelift. Early cars (2015 to 2018) use the M274.920 rated at 245 PS (180 kW), and facelift cars (2018 to 2021) use the mild-hybrid M264.920 at 249 to 258 PS depending on market and revision. The research is explicit that early and facelift C 300s must not be combined into one engine code. The same M274 and M264 families run through the W205 C 180 and C 200 at lower outputs, and the W206 C 300 moved to the M254.920. Because the C 300 is the top petrol rating of these families, an engine from a C 180 or C 200 is not a safe match. Before ordering any used, reconditioned or rebuilt unit, confirm your exact code from your V5C or the number stamped on the engine block itself.

Buy Used and Second-Hand Mercedes-Benz C-Class C 300 (W205) Engines

Used engines across these applications do come up for sale in the UK, generally sourced from donor or accident-damaged Mercedes-Benz C-Class C 300 (W205) vehicles. Weigh a cheaper used unit's unknown history and lack of warranty against a reconditioned unit that gets you back on the road with confidence.

Mercedes-Benz C-Class C 300 (W205) Engines in Stock

We work with a UK-wide network of suppliers who carry reconditioned, rebuilt and remanufactured engines for every Mercedes-Benz C-Class C 300 (W205) application listed here, along with used units where buyers prefer that route. Give us your registration and we'll confirm current stock, typical lead times, and whether supply-only or supply-and-fit makes more sense for your situation.

Warranty for Replacement Mercedes-Benz C-Class C 300 (W205) Engines

Warranty terms for a replacement engine are set individually by the supplier we match you with — typically around 12 months on a reconditioned or remanufactured unit. Always get the warranty length, what it covers, and the VAT and fitting basis confirmed in writing before you commit.

Mercedes-Benz C-Class C 300 (W205) Engine Problems & What to Check Before Buying

General specialist commentary on these engine families covers the usual wear points for engines of these types and ages. We note this as general background, not a confirmed finding for any specific vehicle — ask your supplier what inspection was carried out on the unit you're being quoted. The M274 to M264 transition is the key buyer issue, and exact year and VIN fitment matter more than the badge. Issues are discussed at family level only, and we make no failure claim for your car; ask the supplier which engine they are quoting, what was inspected and renewed, and whether mild-hybrid components are included for the M264.920.

What's Included in a Reconditioned Mercedes-Benz C-Class C 300 (W205) Engine

A genuine reconditioned or remanufactured unit should include a full strip, clean and inspection against factory tolerances, replacement of gaskets, seals and wear items, and a bench test before it leaves the workshop. What's not always included — ancillaries like the turbo, injectors or auxiliary belt components, and whether the price is supply-only or supply-and-fit — varies by supplier, so ask for this in writing alongside your quote rather than assuming it's covered.