Dacia Logan
Naturally aspirated 1.0-litre three-cylinder without turbo — maximum simplicity with low maintenance requirements. No hydraulic tappets, so have valve clearance checked every 100,000 km. Timing chain can wear prematurely with excessively long oil change intervals; pay particular attention to the cooling system on this aluminium engine.
The bare minimum
49 kW in the Logan — barely enough for city traffic. Overtaking on country roads requires a lot of patience and a long run-up.
Engine Weaknesses 3
Timing chain can stretch on the turbocharged variants (TCe) after 120,000–160,000 km. Cold-start rattling is an early warning sign.
Symptoms: Timing chain can stretch on TCe variants after 120,000 km
Valve cover gasket leaks in the spark plug tube area. Same issue as the H4B three-cylinder.
Symptoms: Valve cover gasket leaks in the spark plug tube area
CVT gearbox (X-Tronic) judders at constant speed. A software update may help; otherwise the variator belt is worn.
Symptoms: CVT gearbox (X-Tronic) judders at constant speed
Vehicle Weaknesses 5
As with previous models, axle components and steering joints on the Logan III show above-average defect rates at early MOTs — a cross-generation Dacia trait.
The indicator stalk does not reliably cancel after turning in, especially when overtaking. A software update or replacement of the unit can help.
Some vehicles occasionally show an 'Check injection' warning without a permanent fault. Often a software or sensor issue identifiable by diagnostic scan.
Despite the improved platform, sound insulation remains at a low budget level. Wind and road noise penetrate the cabin noticeably at higher speeds.
The third generation still suffers from cost-saving thin paint. Stone chips quickly create rust risk, especially on exposed front sections.
