Kappa II / Smartstream 1.2 MPI-DPi (G4LF) vs Smartstream G3.5 (G6DU / G6DT)
Side-by-side reliability comparison
Specifications
Character
Kappa II / Smartstream 1.2 MPI-DPi (G4LF)
"The 1,197 cc four-cylinder petrol in the 2020+ i10, i20, Bayon, Picanto, Rio and Stonic. Non-turbo, chain-driven, simple. German used-car guides know of no engine problems so far; one engine guide warns the thin chain can stretch around 100,000 km. Some early-2024 cars were recalled for an EGR valve that can stall the engine. Slow but cheap to run. Not the older 1,248 cc G4LA."
Smartstream G3.5 (G6DU / G6DT)
"Hyundai and Kia's naturally aspirated 3.5 V6 of the Smartstream generation (from 2020): port injection (G3.5 MPi, about 272 hp) or combined port and direct injection (G3.5 GDi, about 290-300 hp) in the Kia Carnival KA4, Sorento MQ4 and K8 and the Hyundai Santa Fe TM and Staria. Timing chain and hydraulic lifters. Too new for long-term data; engine guides expect about 300,000 km. US Carnivals were recalled for fuel leaks at the fuel rail. Not the Genesis 3.5 twin-turbo (G6DS) or the older 3.3 GDi (G6DH)."