The petrol-powered part of the engine system is a 3.3 L V6 (the same one found in the RX 330). Because of the help of the electric engine, however, it can reach a speed of sixty mph in less than eight seconds—quicker than the petrol-only RX 330. (Because of a rear-drive electric motor, an optional all-wheel drive system can increase the rate of acceleration.) Despite this, the RX 400h consumes roughly the same amount of petrol as a compact four-cylinder sedan; it qualifies as a Super Ultra Low Emission Vehicle (SULEV) (CanadianDriver, 2004).
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