1NR-FE vs 3ZZ/4ZZ
Side-by-side reliability comparison
Specifications
Character
1NR-FE
"The 1.33 petrol in the Yaris XP90/XP130, Auris and Corolla E150/E180, iQ, Urban Cruiser and Verso-S. Chain-driven, port injection, no turbo. German and French used-car data rate it durable, but it is known for oil consumption that grows with mileage, and engines run low on oil can fail. Check the dipstick and the service history."
3ZZ/4ZZ
"Corolla E120 1.4 (4ZZ-FE) and 1.6 (3ZZ-FE), also the facelifted Corolla E110, Corolla Verso, Avensis and early Auris. Simple chain-driven 16V with VVT-i. The known weakness is oil consumption from faulty piston rings on some engines, up to about 1 litre per 1,000 km: check the oil level often, because burning oil also damages the catalytic converter. Otherwise very few engine faults are reported."