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Mercedes-Benz CLS Class buying guide (Ireland, 2026)
What a used Mercedes-Benz CLS Class costs in Ireland, how it does at the NCT, what goes wrong and what it costs to fix. Based on 77 for sale right now.
Used Mercedes-Benz CLS 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.
| Year | Typical price | Typical mileage | For sale |
|---|---|---|---|
| 2021 | €38,900 | 235k km | 5 |
| 2019 | €34,900 | 106k km | 19 |
| 2018 | €28,000 | 129k km | 9 |
| 2017 | €22,950 | 132k km | 8 |
| 2016 | €15,000 | 174k km | 8 |
| 2014 | €15,900 | 237k km | 5 |
Mercedes-Benz CLS Class NCT pass rate
How often Mercedes-Benz CLS Classes pass their NCT first time, against all cars the same age (Road Safety Authority (RSA), NCT make & model data 2025, initial tests).
| Year | Pass first time | All cars that age | |
|---|---|---|---|
| 2022 | 79% | 80% | |
| 2021 | 79% | 80% | |
| 2020 | 72% | 75% | |
| 2019 | 69% | 74% | |
| 2018 | 63% | 67% | |
| 2017 | 59% | 64% | |
| 2016 | 66% | 55% | |
| 2015 | 44% | 53% | |
| 2014 | 49% | 51% | |
| 2013 | 41% | 46% |
Most common reasons a 2018 Mercedes-Benz CLS Class fails: wheels & tyres (15% of tests, more than most cars), headlight aim (8% of tests, more than most cars), safety equipment (6.7% of tests, more than most cars), brake test (rollers) (5.3% of tests, more than most cars).
Common Mercedes-Benz CLS Class problems
Known weak spots to check before you buy, with typical Irish garage costs if the problem is there.
Automatic gearbox health · €300–€2,500
Make sure the gear changes are smooth when warm, check for a gearbox warning light and ask if the gearbox oil was ever changed.
Engines and how long they last
| Engine | Usually lasts | Motor tax / year | For sale |
|---|---|---|---|
| 2.1 Diesel | ~400k km | ~€570 | 18 |
| 2.0 Diesel | ~400k km | ~€270 | 14 |
| 2.9 Diesel | ~400k km | ~€750 | 8 |
| 3.0 Diesel | ~400k km | ~€750 | 5 |
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.
2.9 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 CLS Class
Enter the reg on the parts page to get the right fit.
Brake discsBrake padsClutch kitsBatteriesShock absorbersWheel bearingsWiper bladesBulbsGlow plugsEGR valves
Before you buy a used Mercedes-Benz CLS 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.
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