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The first turbocharged Lexus model, the 8AR, is based on the 16-valve, dual-VVT-I AR four-cylinder. To meet CAFE criteria, Lexus is developing more fuel-efficient, powerful engines.
The 2GR V6's predecessor, the 3MZ, was added to most Lexus models at some point. As demonstrated with the RX330h, the 3MZ we care about is the 3.3L Hybrid.
Lexus debuted the 1UZ-powered LS400 and Lexus to Americans. Toyota raced a 1UZ variation in Indycars because it could run full power for hundreds of kilometres.
Yamaha helped create the 1LR. With its 12:1 compression ratio, separate throttle bodies, and 9500rpm redline, this LFA engine was a monument to naturally-aspirated race engines.
The IS-F introduced the 2UR, a high-revving, high-compression UR engine. The 32-valve V8, co-designed with Yamaha, with variable valve timing (VVT-i) and electronic intake cam management.
Most Lexus models use the 2GR corporate V6. Lexus should keep this direct-injected 3.5L V6 around forever because it's smooth, linear, and fuel-efficient.