KNOWN FAULTS · Dacia

Dacia Logan (I) 1.4 / 1.6 MPI (K7J / K7M) common problems.

2004–2012 · Petrol

Sources are not verified in real time and no entry confirms that your car is affected.

By what you notice

Jerking or losing power1 sheet

Noises or vibration1 sheet

Applies if: Weak points of this model from inspections, breakdown statistics and recalls; anything specific to one engine is stated in the sheet.

Suspension, exhaust, brakes and valve collets on the Logan IKnown weak points

Engine / equipment: Dacia Logan I and Logan MCV I (petrol, LPG and diesel)
Period mentioned: 2004–2012
Symptoms: Joints and track-rod ends that wear quickly, a short-lived exhaust, brake hoses from the sixth year and then discs, lights; batteries, starters, fuel pumps, door locks, crankshaft sensors and ignition leads.
Possible cause described: Inspection and breakdown-service data. Recalls: faulty valve collets on 2010 model-year cars (possible engine damage), loosely fixed alternator wiring (fire risk), the brake-light switch (2009) and an ABS warning lamp that might not light up.
Check for the garage: Check the campaigns by VIN; check the front axle, brake hoses, exhaust and lights before the roadworthiness test.
Cost cited in the source: No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.

Misfires and an unstable idle on the 1.4/1.6 MPI (K7J/K7M): a cracked ignition coil and the idle stepper motorEngine

Engine / equipment: 1.4 MPI (K7J) and 1.6 MPI 8V (K7M), petrol or LPG: Dacia Logan I, Logan MCV I and Sandero I
Period mentioned: 2004–2013
Symptoms: The engine shakes or runs on three cylinders, above all in damp weather or when cold, and the OBD scan shows misfires; or the idle will not hold: the engine stays revving or stalls when you stop.
Possible cause described: According to the owners who answer on DailyDriven, the ignition coil cracks and stops sparking in damp weather (a 1.4, and a 1.6 that twice failed to start at 230,000 km), and the idle stepper motor (idle valve) fails: on one 1.4 it was replaced three times from about 35,000 km, and on another the engine stayed revving at 235,000 km. These are owner reports, not statistics.
Check for the garage: Read the codes with an OBD reader and check the coil for cracks, together with the spark plugs and leads; if the idle fails, clean or test the stepper motor before replacing other parts. On LPG cars a weak coil shows up first when running on gas.
Cost cited in the source: What DailyDriven owners paid: a coil, about 100 lei; a set of spark plug boots, 97 lei; cleaning the stepper motor, 50 lei of products. Amounts in lei from earlier years, not a current quote.A rough figure from the original database, not an up-to-date quote.