2018 Mercedes-Benz GLA 250 engine problems
10 owner complaints filed with NHTSA name the engine on the 2018 Mercedes-Benz GLA 250 — 21% of all complaints for this model year.
What owners report
“I am filing a complaint regarding my 2018 Mercedes-Benz GLA 250. My vehicle recently triggered a check engine light and was diagnosed by an independent mechanic with code P052E, related to the positive crankcase ventilation regulator valve / crankcase ventilation system. My mechanic advised that…”
filed Jun 22, 2026
“Why is the Crankcase Ventilation System P052E Code (PCV) covered in most Mercedes models, but not the GLA? This is an expensive repair that seems to cover other cars but penalizes GLA owners just to have a safe car to drive like the other models. I strongly believe GLA should be on the recall list…”
filed Feb 26, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
Dear Mercedes-Benz USA Dealers, The part numbers listed in the chart below should no longer be installed, and any existing stock must be returned to your facing PDC. The deadline for all dealer returns is no later than…
PSL-NCU Return Parts 6/19 · Other · issued Jun 19, 2026
Engine problems in other GLA 250 years
| Year | Reports | Share |
|---|---|---|
| 2019 GLA 250 | 3 | 11% |
| 2017 GLA 250 | 8 | 28% |
| 2016 GLA 250 | 15 | 31% |
| 2015 GLA 250 | 27 | 29% |
Other reported problem areas on the 2018 Mercedes-Benz GLA 250
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.