The first-generation RX — the RX300 — was introduced in 1998 and continued in production until 2004. The second-generation model was first shown at the 2003 Detroit motor show, and a year later Lexus used the SUV to launch its hybrid programme. The hybrid RX was first introduced to the UK in May 2005, with 195g/km of CO2.

Lexus continues to believe that hybrid technology is superior to diesel power for its cars. This is the third generation of its RX sports utility vehicle and the second to be offered with a hybrid powertrain. In fact, the hybrid version is now the only RX offered in the UK, in a market dominated by large diesel engines.

Lexus’s persistence with the petrol/electric technology is driven by fewer particulate emissions and a smoother powertrain compared with diesel rivals. But if the headline figures for the new RX450h are anything to go by, class-leading CO2 emissions are on the cards too. This new RX450h has recorded 44.8mpg on the official European combined cycle, which makes its taxable carbon dioxide emissions figure just 145g/km. That’s not only substantially less than the latest Range Rover Sport TDV6, but also less than some superminis. That means it is eligible for a cheap tax disc and a low benefit-in-kind rating.

Top 5 Luxury SUVs

Find an Autocar car review

Driven this week

  • Maserati Levante S GranLusso 2019 road test review - hero front
    24 May 2019
    Car review
    Is this Ferrari-engined Levante the performance SUV it always should have...
  • Bentley Continental GT Convertible 2019 UK first drive review - hero front
    24 May 2019
    First Drive
    New Conti Convertible has all the many advantages of a new platform, seen...
  • Audi SQ5 2019 first drive review - hero front
    22 May 2019
    First Drive
    High-performance soft-roader adopts new sporty V6 diesel mild-hybrid power,...

Your choice of RX trim levels comes down to two things: whether you want steel springs or air suspension and how much kit you want – although even the entry-level cars are reasonably specced.

Save money on your car insurance

Compare quotesCompare insurance quotes

First drives

Find an Autocar car review

Driven this week

  • Maserati Levante S GranLusso 2019 road test review - hero front
    24 May 2019
    Car review
    Is this Ferrari-engined Levante the performance SUV it always should have...
  • Bentley Continental GT Convertible 2019 UK first drive review - hero front
    24 May 2019
    First Drive
    New Conti Convertible has all the many advantages of a new platform, seen...
  • Audi SQ5 2019 first drive review - hero front
    22 May 2019
    First Drive
    High-performance soft-roader adopts new sporty V6 diesel mild-hybrid power,...