F9Q (2005-2012, Euro 4/5) vs F4Rt
Side-by-side reliability comparison
Specifications
Character
F9Q (2005-2012, Euro 4/5)
"Later 1.9 dCi (Bosch CP3 common rail, Euro 4 and 5) in the Megane II/III, Scenic II/III, Laguna II and Suzuki Grand Vitara. Much better than the 2000-2005 engines: the connecting-rod bearing problem is gone and turbo faults were fixed by 2008. The weak point is the injectors - a leaking injector seal can damage the engine - plus EGR clogging. Timing belt."
F4Rt
"Renault 2.0 turbo petrol (Laguna II/III 2.0T and GT, Espace IV, Vel Satis, Scenic II, Megane II Sport 225/230, Megane III R.S. 250-275, Megane III TCe 180). Understressed and durable; stronger internals than the non-turbo F4R and no phaser pulley. Watch the timing belt and its rattly pulleys, rocker-cover oil leaks and ignition coils; track cars need extra cooling."