Lexus GS 450h - Click above for high-res image gallery

It looks like Lexus is planning to go to both extremes on the green-performance continuum. When the next-generation IS appears in a couple of years, it will likely add a hybrid powertrain option. Such a move would be in keeping with Toyota's oft-stated commitment to having hybrid drive available in almost all of its platforms by the end of the decade. The IS hybrid may also spawn a new rear-drive hybrid sports car around the same time. If these IS based hybrids are consistent with the current GS450h they will definitely be biased more towards performance than efficiency, using the hybrid drive to enhance acceleration without consuming more gas.

Meanwhile, the GS – as rumored previously – could be setting its sites on the new BMW M5 and Cadillac CTS-V. Even though only 500 LF-As will be built, the 4.8-liter V10 may find its way into a much-rumored new GS-F model. The GS-F won't arrive until 2013 so it should be based on the next generation sedan. In the LF-A, the V10 has the power to compete with the German and American models but falls short of the Cadillac's torque. If the new M5 gets the uprated 4.4-liter twin-turbo V8 from the X5/X6 M, it would also be way ahead of the Lexus. Unless the Lexus engine gets boosted or the GS looses a lot of weight, this could be the only high-revving sports sedan of the pack left.

[Source: Autocar, Autocar]

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