G4NA vs U 1.1 CRDi (D3FA)
Side-by-side reliability comparison
Specifications
Character
G4NA
"The port-injected 2.0 non-turbo petrol of the Nu family, used in the Hyundai Tucson TL, Elantra, i40 and ix35 and the Kia Sportage QL, Optima, Cerato and Soul. Simple and cheap to service, with a timing chain and no direct injection. Its weak point is the thin-liner aluminium block: Russian specialist press and workshops report piston and cylinder scuffing, sometimes before 100,000 km, often started by debris from a disintegrating catalytic converter, and oil consumption from sticking oil rings. Hyundai added piston-cooling oil jets and stronger bearings from 2017. Keep oil changes short and check for knocking on a cold start."
U 1.1 CRDi (D3FA)
"Three-cylinder 1.1 CRDi diesel (2005-2019) from the Hyundai/Kia U family, used in the Kia Picanto, Hyundai i10 and i20 and Kia Rio. 75 hp, Bosch common rail, very low fuel use. No widespread serious fault is documented; the main costs come from soot clogging the EGR valve and intake swirl flaps in town driving, and early engines can push oil into the intake through the crankcase breather. Owners report 290,000 km and more. Evidence is limited, so the score is capped."