KNOWN FAULTS · Mazda
Mazda CX-7 (ER) 2.2 MZR-CD common problems.
2007–2012 · Diesel
Sources are not verified in real time and no entry confirms that your car is affected.
1 known fault with sources
Applies if: The CX-7 diesel has the same 2.2 MZR-CD with particulate filter as the Mazda6 (GH): the sheet is the Mazda6’s.
Oil diluted with diesel during particulate filter regenerations (Mazda6 GH 2.2 diesel on short trips)Engine
- Engine / equipment
- Mazda6 (GH) 2.2 diesel with particulate filter
- Period mentioned
- 2008–2012
- Symptoms
- The oil level rises on the dipstick instead of falling, especially on cars used mostly for short trips.
- Possible cause described
- According to AUTO BILD, it is the diesel’s only weak point: on short trips, diesel gets into the oil during particulate filter regeneration and dilutes it.
- Check for the garage
- Check the oil level with the engine cold; if it is above the maximum or smells of diesel, change the oil and filter. Make a long road trip now and then so the regeneration can finish.
- Cost cited in the source
- No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.