What is it?
The second incarnation of Lexus’s SUV, only this time it’s hybrid only – at least in the UK (some European markets and the US get the V6 petrol model, too.) The body’s all new but underneath is a platform shared with the US-market Toyota Highlander and the drivetrain is an evolution of the RX400h’s.
So that means the same set-up, with the same CVT gearbox containing a motor and a second motor in the back axle. The clever bit, the power management unit, is new – it's smaller, lighter and more efficient – and the engine, still a V6, now runs on the Atkinson cycle, which does a better job of turning petrol into energy. It’s heavy though –over two tonnes and 70kg more than the 400h.
Lexus claims an admirable 148g/km of CO2, which makes it the least likely SUV to contribute to global meltdown, and 44.8mpg – impressive figures for a car in this class.
And because this is the Euro-spec RX, it gets retuned suspension and a retuned power management unit that will provide better off the line acceleration but still (Lexus claims) return comparable fuel consumption.
What’s it like?
Strongly reminiscent of the 400h, but about 50 per cent better all round. Inside the quality’s improved and there’s a new infotainment controller that replaces the touch screen system with an iDrive style central control unit. This one resembles a computer mouse – you move a cursor round the screen with a joystick. Lexus calls it Remote Touch and it works well, and will find its way into other Lexus models soon.