2.0 dCi (M9R)
2007–2015 · diesel · 1995cc · 150hp
Engine codes: M9R
Reliability, common problems and owner reviews for the Renault Laguna III 2.0 dCi (M9R). Check this before you buy used.
The 2.0 dCi (M9R, 130–175hp) is the Laguna's best engine — the same Alliance unit as Qashqai/X-Trail/Mégane, genuinely reliable and the 150/180hp versions especially well-regarded. Chain-driven (rated ~160,000 km but can stretch → cold-start rattle), with the known DPF-pressure-sensor pipe fault and city DPF clogging, plus occasional turbo/crankshaft-liner wear on hard-used examples. Use low-ash C3 oil and it'll cover big distances.
Same engine, other cars
This is the same physical engine (M9R) sold under different names across brands. Reliability is broadly shared — cross-check these:
Known Issues
Chain rated ~160k km; stretch causes startup rattle/rough idle if oil neglected.
Fix / Workaround: Strict oil; replace chain kit at first rattle.
Repair cost: €500–€1200
Typically appears after: 160,000 km
Known fault: the DPF differential-pressure sensor pipe blocks/cracks → false DPF faults.
Fix / Workaround: Replace sensor pipe; clean DPF; motorway regens.
Repair cost: €80–€600
Turbo and crankshaft liner can wear on hard-used / oil-neglected cars.
Fix / Workaround: Oil discipline; check turbo on drive; listen for bottom-end knock.
Repair cost: €500–€1500
Typically appears after: 180,000 km
Mileage Thresholds
After 160,000 km: Chain + DPF sensor attention.
Pre-Purchase Checklist
- ☐Low-ash C3 oil history
- ☐Cold-start chain rattle check
- ☐DPF + sensor-pipe history (city cars)
Frequently asked questions
Is the Renault Laguna III 2.0 dCi (M9R) reliable?
Maint. Sensitive — The 2.0 dCi (M9R, 130–175hp) is the Laguna's best engine — the same Alliance unit as Qashqai/X-Trail/Mégane, genuinely reliable and the 150/180hp versions especially well-regarded. Chain-driven (rated ~160,000 km but can stretch → cold-start rattle), with the known DPF-pressure-sensor pipe fault and city DPF clogging, plus occasional turbo/crankshaft-liner wear on hard-used examples. Use low-ash C3 oil and it'll cover big distances.
What are the common problems and reviews for the Renault Laguna III 2.0 dCi (M9R)?
The most commonly reported problems: Timing chain stretch, DPF pressure-sensor pipe, Turbo / crank-liner wear.
Is a used Renault Laguna III 2.0 dCi (M9R) worth buying?
Fine if serviced correctly — but it punishes neglect hard. History and the right consumables matter.