2.0 16V (M4R)
2007–2015 · petrol · 1997cc · 140hp
Engine codes: M4R
Reliability, common problems and owner reviews for the Renault Laguna III 2.0 16V (M4R). Check this before you buy used.
The 2.0 M4R (Nissan-Renault Alliance, related to the MR20) is the naturally-aspirated petrol — smoother and more adequate than the 1.6, and fundamentally robust. Chain-driven and long-lived with fresh oil; main niggles are ignition coils and the CVT/auto on some versions. A sensible, low-drama petrol choice if you don't need a diesel.
Same engine, other cars
This is the same physical engine (M4R) sold under different names across brands. Reliability is broadly shared — cross-check these:
Known Issues
Coils fail → rough idle/misfire.
Fix / Workaround: Replace coil set + plugs.
Repair cost: €120–€350
Typically appears after: 120,000 km
Automatic versions need fluid discipline.
Fix / Workaround: Fresh transmission fluid on schedule.
Repair cost: €150–€1500
Mileage Thresholds
After 150,000 km: Coils main wear item.
Pre-Purchase Checklist
- ☐Misfire codes = coils
- ☐If auto, check fluid history
- ☐The dependable Laguna petrol
Frequently asked questions
Is the Renault Laguna III 2.0 16V (M4R) reliable?
Maint. Sensitive — The 2.0 M4R (Nissan-Renault Alliance, related to the MR20) is the naturally-aspirated petrol — smoother and more adequate than the 1.6, and fundamentally robust. Chain-driven and long-lived with fresh oil; main niggles are ignition coils and the CVT/auto on some versions. A sensible, low-drama petrol choice if you don't need a diesel.
What are the common problems and reviews for the Renault Laguna III 2.0 16V (M4R)?
The most commonly reported problems: Ignition coil failure, Auto/CVT health.
Is a used Renault Laguna III 2.0 16V (M4R) worth buying?
Fine if serviced correctly — but it punishes neglect hard. History and the right consumables matter.