H4M E-Tech (HR16 + 2 electric motors) vs K7J/K7M
Side-by-side reliability comparison
Specifications
Character
H4M E-Tech (HR16 + 2 electric motors)
"Renault's 1.6 E-Tech hybrid: the naturally aspirated Nissan-designed 1.6 four-cylinder (H4M/HR16) with two electric motors and a clutchless multimode dog-clutch gearbox, in the Clio V, Captur II, Arkana, Megane, Symbioz, Dacia Jogger and Duster and Mitsubishi ASX, as full hybrid (140-145 hp) or plug-in (158-160 hp). The petrol engine itself has a good record. The weak point is the hybrid gearbox: a seal on the e-motor shaft can leak oil, and Renault has run campaigns on about 157,000 cars built 2019-2024, up to a new gearbox. Ask for proof that all campaigns were done."
K7J/K7M
"Simple 8-valve petrol in 1.4 (K7J) and 1.6 (K7M) form, used in the Dacia Logan and Sandero, Clio II, Kangoo I, Megane I, Dokker and Lodgy. One of the longest-lived Renault engines: specialist sources report 300,000-400,000 km without a major overhaul. Its one serious risk is the timing belt: it is an interference engine, so a failed water pump or tensioner roller bends the valves - change the full kit every 60,000-90,000 km. Expect cheap faults: cracked ignition coils (pre-2012), oil leaks from the front crank seal and oil cooler, and a dirty idle regulator. No hydraulic lifters, so valve clearances need adjusting."