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Mercedes-Benz B-Class buying guide (Ireland, 2026)
What a used Mercedes-Benz B-Class costs in Ireland, how it does at the NCT, what goes wrong and what it costs to fix. Based on 157 for sale right now.
Our take on the Mercedes-Benz B-Class
A 2022 Mercedes-Benz B-Class typically advertises at €31,950 and a 2017 one at €15,450, so it loses roughly 14% of its value a year at that age. At the NCT, the 2009–2019 cars do better than other cars the same year. The 1.6 petrol is the most common engine (47% of those with a known engine), and it usually lasts around 300k km.
Check a Mercedes-Benz B-Class's priceNCT pass rate by year
Used Mercedes-Benz B-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 |
|---|---|---|---|
| 2022 | €31,950 | 29k km | 7 |
| 2021 | €25,000 | 66k km | 8 |
| 2020 | €24,900 | 88k km | 12 |
| 2019 | €18,750 | 69k km | 15 |
| 2018 | €16,000 | 78k km | 15 |
| 2017 | €15,450 | 81k km | 21 |
| 2016 | €12,950 | 81k km | 22 |
| 2015 | €12,000 | 76k km | 12 |
| 2014 | €8,850 | 100k km | 11 |
| 2013 | €8,950 | 129k km | 9 |
| 2012 | €7,700 | 136k km | 13 |
Mercedes-Benz B-Class NCT pass rate
How often Mercedes-Benz B-Classes pass their NCT first time, compared with other cars the same year (Road Safety Authority (RSA), NCT make & model data 2025, initial tests).
| Year | Pass first time | Other cars, same year | |
|---|---|---|---|
| 2019 | 84% | 74% | |
| 2017 | 77% | 64% | |
| 2016 | 74% | 55% | |
| 2015 | 65% | 53% | |
| 2014 | 68% | 51% | |
| 2013 | 64% | 46% | |
| 2012 | 57% | 42% | |
| 2011 | 37% | 38% | |
| 2009 | 34% | 31% | |
| 2008 | 28% | 30% | |
| 2007 | 30% | 31% | |
| 2006 | 33% | 30% |
Most common reasons a 2017 Mercedes-Benz B-Class fails: steering & suspension (6.8% of tests), wheel alignment (5.8% of tests), wheels & tyres (5.4% of tests), lights & electrics (4.4% of tests).
Common Mercedes-Benz B-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 |
|---|---|---|---|
| 1.6 Petrol | ~300k km | ~€400 | 36 |
| 2.0 Diesel | ~400k km | ~€270 | 12 |
| 1.5 Diesel | ~400k km | ~€200 | 10 |
| 1.3 Petrol | ~300k km | ~€280 | 10 |
| 1.8 Diesel | ~400k km | ~€270 | 8 |
2.0 Diesel: usual problem: injector seals and timing chain on 2.1 CDI.
1.5 Diesel: usual problem: injector seals and timing chain on 2.1 CDI.
1.8 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 B-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 bulbsSpark plugsIgnition coils
Quick bits on Amazon
Faster delivery for small things.
Wiper bladesBulbsBatteryOBD2 fault code readerJump starter
Before you buy a used Mercedes-Benz B-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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