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Mercedes-Benz C-Class buying guide (Ireland, 2026)

What a used Mercedes-Benz C-Class costs in Ireland, how it does at the NCT, what goes wrong and what it costs to fix. Based on 780 for sale right now.

Executive car See every executive car's typical price.

Our take on the Mercedes-Benz C-Class

A 2023 Mercedes-Benz C-Class typically advertises at €39,950 and a 2018 one at €19,950, so it loses roughly 13% of its value a year at that age. At the NCT, the 2007–2009 cars do better than other cars the same year. The 2.0 hybrid is the most common engine (31% of those with a known engine), and it usually lasts around 300k km.

Check a Mercedes-Benz C-Class's priceNCT pass rate by year

Used Mercedes-Benz C-Class prices by year

Typical asking price by registration year, and typical mileage. Private sellers usually take 5–10% less than asking; expect dealers to be a little dearer.

Mercedes-Benz C-Class NCT pass rate

How often Mercedes-Benz C-Classes pass their NCT first time, compared with other cars the same year (Road Safety Authority (RSA), NCT make & model data 2025, initial tests).

Most common reasons a 2018 Mercedes-Benz C-Class fails: wheel alignment (11.4% of tests, more than most cars), steering & suspension (10.8% of tests, more than most cars), wheels & tyres (9.1% of tests), headlight aim (5.4% of tests).

Common Mercedes-Benz C-Class problems

Known weak spots to check before you buy, with typical Irish garage costs if the problem is there.

Engines and how long they last

2.1 Diesel: usual problem: injector seals and timing chain on 2.1 CDI.

2.0 Diesel: usual problem: injector seals and timing chain on 2.1 CDI.

1.6 Diesel: usual problem: injector seals and timing chain on 2.1 CDI.

"Usually lasts" is the mileage these engines commonly reach before major work; service history matters more than the number.

Parts for the Mercedes-Benz C-Class

Parts from AUTODOC Ireland: pick your car on the parts page to get the right fit.

Brake discsBrake padsClutch kitsTiming chain kitsShock absorbersWheel bearingsTrack rod endsFiltersWiper bladesHeadlight bulbsGlow plugsEGR valves

Quick bits on Amazon

Faster delivery for small things.

Wiper bladesBulbsBatteryOBD2 fault code readerJump starter

Before you buy a used Mercedes-Benz C-Class

Run a history check on the reg (write-off, finance owing, mileage), ask when the last service was done and for receipts, and start it from cold yourself. The used car checklist takes you through a viewing step by step.

Other Mercedes-Benz guides

Mercedes-Benz E-ClassMercedes-Benz A-ClassMercedes-Benz CLA-ClassMercedes-Benz GLC-ClassMercedes-Benz GLA-ClassMercedes-Benz GLE-ClassMercedes-Benz B-ClassMercedes-Benz GLB