Styling/Image
At first glance there’s little to distinguish the petrol-electric Lexus from other models in the firm’s RX line-up. There’s the same high-riding stance, long overhangs and unusually steeply raked rear. However, take a closer look at the big off-roader and you’ll notice small hybrid badges on the flanks and one on the tailgate. Overall, the design looks a little dated and lacks the visual impact of prestige rivals, such as the BMW X5 or Mercedes M-Class. Buyers can pick from five trim levels – SE, SE-L, SR, Limited Edition and Executive Limited Edition.
Interior/practicality
Despite its premium price and pretensions, the RX400h’s cabin feels a little low rent. Build quality is excellent, but some of the shiny plastics look and feel cheap. As a result it lacks the feelgood factor that you’d expect in a luxury car. At least the interior is well equipped, with entry-level models getting leather trim, sat-nav and climate control. The interior is spacious too, with room for five adults and useful 439-litre boot. Sadly, a fixed rear bench that doesn’t fold flat hampers the Lexus’s load-lugging ability.
Engine/performance
Given its eco-friendly billing, the RX400h delivers surprisingly strong straight-line pace. Its hybrid powerplant uses a 3.3-litre V6 petrol engine and electric motor to deliver 269bhp. Mated to CVT auto gearbox and permanent four-wheel drive system, it allows the Lexus to sprint from zero to 62mph in a hot hatch-rivalling 7.6 seconds. But it’s the refinement that really impresses. At low speeds, the car can run on electricity alone, meaning near silent progress. Prod the throttle pedal a little harder and the smooth internal combustion engine fires unobtrusively into life. Unfortunately, the performance at the pumps is less impressive, and most owners can expect a disappointing return of 25mpg.
Driving experience
As you’d expect of a big SUV, the Lexus offers little in the way of driver involvement. While the steering is light and direct, it lacks feedback. However, turn into a sharp bend and you’ll find that body roll is well controlled and there’s plenty of grip. The high set driving position offers a commanding view of the road, while the suspension serves-up a cosseting ride over poor road surfaces. Low wind noise and excellent mechanical refinement mean the RX400h is relaxing long distance companion.
Ownership costs
If you thought efficient hybrid powerplants automatically resulted in low running costs, then think again. The RX400h is every bit as pricy to own as a traditional large SUV. Apart from the high list price, there’s also the prospect of 25mpg fuel consumption – a diesel-engined BMW X5 can add around 10mpg to that figure. On the plus side, buyers can expect residuals of around 40 percent and the range-topping Limited Edition versions come with a free two-year servicing package.
Safety/Environment
It’s been around for five years now, but the RX still features plenty of safety kit. All versions get eight airbags, ESP and powerful xenon headlamps. Sadly, the Lexus’s environmental credentials can’t live up to the promise of its petrol/electric powertrain. In isolation its 192g/km CO2 figure looks impressive, but traditional oil-burning rivals aren’t far behind and manage to deliver better fuel returns.
Our Choice: RX400h SE
Tell us about your car in our Driver Power survey.
For more breaking car news and reviews, subscribe to Auto Express magazine. We'll give you 6 issues for £1 and a free gift!
I totally disagree with the comments on the fuel figures...I have had my RX400H SE for 2 years now and I regularly get around 31+MPG sometimes more.Plus the 205 pound car tax is a positive bonus.
Surfbum
I have to agree with the last contributor. Ours never does less than 30mpg so I cannot imagine how badly driven the test car was to get 25mpg!
Over the last year ours has averaged a genuine 34mpg and I keep all my petrol receipts so I know it is correct.
Performance is also excellent for such a big car and the ride and peacefulness of the hybrid drive is exceptional.
Reliability has been exemplary over the last three years and apart from (cheap) servicing, it has been nowhere near a repair shop. The brakes (due to the hybrid drive) seem to lasting forever.
Bodywork and interior still look new and towing with it is quite delightful.......the torque from the two electric motors coupled with that big V6 is quite outstanding.
All in all, well worth the money.
For what it is worth, our Range Rover petrol averaged 17mpg, our diesel Discovery 25mpg, and our BMW X5 was so abyssmal that we didn't keep it in the family long enough to properly asess it.
That mpg figure of 25mpg is ridiculous. I go through phases of trying to drive as economically as I can and I get up around 35/36 mpg (but this is very carefully making full use of the hybrid tech) but even when driving normally I'd never get less than 25mpg. The tester here must have been working very hard on those 0-60 figures!
My wife's just bought the new BMW X3 and its economy figures are on a par with the 400h, taking the cost of diesel into account. Comparing against the X3 brings me to a point that is rarely mentioned - the smoothness of the automatic is fantastic. Due to the combined petrol/motor acceleration you can't detect gear changes. The X3 isn't bad, compared to most others but it still doesn't get close to that of the RX400h.