In creating the LS 600h, Lexus set out to create a car that delivers the highest standards of performance, design, safety and efficiency. Lexus explained, combining these qualities usually demands a degree of compromise, for example, more power means higher fuel consumption, but thanks to the innovative engineering and advanced hybrid power technology deployed by Lexus, the LS 600h defines new standards in the luxury segment.

The LS 600h is the third production model to use Lexus Hybrid Drive, following the successful launch of the RX 400h and GS 450h.  It uses a new, longitudinally-mounted 5.0-litre V8 petrol engine combined with a high-output electric motor and a newly-designed, large capacity battery pack.  The LS 600h is the world's first full hybrid V8 powertrain and matches the performance of conventional, normally-aspirated petrol V12 engines.

Power output from the combined hybrid system is more than 443bhp, yet combined fuel consumption is 29.7mpg and carbon dioxide emissions are less than 220g/km.

When driving in low engine efficiency conditions, such as when starting up and at low to mid-range speeds, the LS 600h runs on its electric motors alone, eradicating both engine noise and CO2 emissions. In normal driving, the V8 engine is the principal power source. During deceleration and under braking, the combustion engine switches off and kinetic energy from the braking is recovered as electrical energy to recharge the battery.

New hybrid models have contributed to growth in Lexus sales throughout Europe: the forecast for 2006 is for a 66 per cent increase to 48,000 units.  The LS 600h will also be available in long wheelbase variant (LS 600h L).