2.2 MZR-CD (diesel)
2009–2012 · diesel · 2184cc · 163hp
Engine codes: R2
Reliability, common problems and owner reviews for the Mazda Mazda 6 2.2 MZR-CD (diesel). Check this before you buy used.
The later 2.2 diesel — strong performance but a known list: DPF problems, premature turbo/cam wear (some replaced under warranty), and the same oil-dilution discipline as the 2.0. Good when maintained and driven on motorways; costly if neglected or city-bound.
Same engine, other cars
This is the same physical engine (R2) sold under different names across brands. Reliability is broadly shared — cross-check these:
Known Issues
DPF is a common problem; flashing vs solid light distinguishes service-due from fault.
Fix / Workaround: Motorway runs; clean/replace; EGR clean.
Repair cost: €300–€1500
Typically appears after: 100,000 km
Some had cams and turbo replaced under warranty.
Fix / Workaround: Check service history; inspect turbo/cam.
Repair cost: €500–€2000
Typically appears after: 120,000 km
Fuel in oil — keep an eye on level; do ECU reset at oil changes.
Fix / Workaround: Oil-dilution reset; watch level.
Repair cost: €0–€1500
Mileage Thresholds
After 100,000 km: DPF/turbo/cam attention.
Pre-Purchase Checklist
- ☐DPF + oil-dilution-reset history
- ☐Inspect turbo/cam wear
- ☐Buy only if motorway-used
Frequently asked questions
Is the Mazda Mazda 6 2.2 MZR-CD (diesel) reliable?
Problematic — The later 2.2 diesel — strong performance but a known list: DPF problems, premature turbo/cam wear (some replaced under warranty), and the same oil-dilution discipline as the 2.0. Good when maintained and driven on motorways; costly if neglected or city-bound.
What are the common problems and reviews for the Mazda Mazda 6 2.2 MZR-CD (diesel)?
The most commonly reported problems: DPF clogging, Turbo / cam premature wear, Oil dilution.
Is a used Mazda Mazda 6 2.2 MZR-CD (diesel) worth buying?
Known design issues and recurring faults that were never fully resolved. Buy only with eyes open.