Dacia Logan
Structurally simple, robust 1.6-litre naturally aspirated engine with high mileage potential. The water pump is the weak point: if it fails, head gasket damage threatens. LPG variant with factory-fitted LPG system; observe 10-year tank re-certification and have injectors checked regularly.
Economical on gas
The 1.6 with LPG saves at the pump. Performance is adequate; the boot shrinks slightly due to the gas tank.
Engine Weaknesses 8
Timing belt due every 60,000–90,000 km. Not interference-free — a snapped belt means valve damage and total engine failure.
Symptoms: Timing belt due every 60,000–90,000 km
Trigger wheel shifts due to crankshaft axial play. TDC sensor loses signal; engine fails to start or runs rough.
Symptoms: Trigger wheel shifts due to crankshaft axial play
LPG burns hotter than petrol — valve seats wear faster. Check valve clearance every 30,000 km. Hardened valve seats fitted from the factory.
Symptoms: LPG burns hotter than petrol — valve seats wear faster
LPG tanks must be inspected and replaced if necessary after 10 years (mandatory inspection). Internal corrosion from condensation is possible.
Symptoms: LPG tanks must be inspected after 10 years
Same weakness as the K7J — valve fouls, engine stalls at idle. Cleaning usually helps.
Symptoms: Same weakness as the K7J — valve fouls, engine stalls at idle
Valve cover gasket becomes porous after 100,000+ km. Oil loss visible at the cylinder head. Inexpensive to replace.
Symptoms: Valve cover gasket becomes porous after 100,000 km
Landi Renzo LPG injectors foul up over time. Replace the gas filter every 15,000 km. Rough running in LPG mode is a symptom.
Symptoms: Landi Renzo LPG injectors foul up over time
LPG ECU (Landi Renzo) is encrypted — only specialist workshops can read it. Regular Dacia dealers are often unable to diagnose it.
Symptoms: LPG ECU (Landi Renzo) is encrypted — only specialist workshops can read it
Vehicle Weaknesses 8
Due to poor paint quality and inadequate corrosion protection, rust forms early on sills, wheel arches, and underbody. Vehicles in salt regions are particularly badly affected.
Recall for affected models due to rust on the rear shock absorber mounts. Structural weakening can compromise driving safety.
Steering and steering joints are among the most frequent MOT complaints. The defect rate is well above average for comparable vehicles.
Brake discs and pads wear faster than average on the Logan I. Regular MOT complaints, braking performance frequently insufficient.
The Logan I's exhaust system is known for early corrosion. A full replacement can be needed after just a few years and regularly causes MOT failures.
The Logan I's low beam shows far above average defect rates at MOT. According to inspection reports, front lighting is up to three times worse than average.
Recall for unreliable ABS warning light failures. The warning light malfunction can delay detection of ABS defects.
The Logan I's interior suffered from cheap plastics and poor panel gaps from the start. Over time, pronounced rattling develops from the dashboard and door panels.
