What Car? names Lexus IS 300h the most efficient executive car

The Lexus IS 300h has been named as the most effcient executive car by leading motoring publication What Car? The hybrid saloon returned an impressive 59.6mpg on the combined cycle, beating rivals from Audi, BMW, and Mercedes.

What Car? gathers its mpg figures in a different way to the Government, which generates official figures based on a laboratory test. What Car? employs a team of  technicians who drive new cars each week to record a vehicle’s combined economy in real-world driving conditions.

Five executive cars were shortlisted in What Car?’s test, and the IS 300h was the only model not to be fitted with a diesel engine, instead mating a 2.5-litre, 178bhp petrol engine to an electric motor. The system, known as Lexus Hybrid Drive, delivers CO2 emissions from as low as 99g/km, meaning considerable savings for business users – What Car? called the IS 300h “A compelling company car option”.

For private buyers, the model is wallet-friendly too, with entry-level SE variants residing in the lowest tax band, meaning £0 annual road tax.

  • Tips on how to get the most out of a Lexus Hybrid are available here

To ensure peace of mind for buyers, the hybrid components of the IS 300h are covered by a five-year, 60,000 mile warranty, this, in addition to Lexus’ enviable reputation for reliability and customer service, make the IS 300h a superb ownership proposition.

To find out more about the Lexus IS range, visit the designated section of the Lexus UK website. If you would like to test drive an IS, leave a comment below, and we’ll get back to you shortly.


  1. With cheaper petrol prices in UK, I think there would be more substantial savings as it’s the only non diesel option across the group.

    1. Thank you for your post Luke.
      Happy to help arrange a test drive for you if you let us know which town you are in, or you can follow the attached link frrom the Lexus website which allows you to choose your dealer and arrange the test drive online. http://www.lexus.co.uk/#/Introduction
      Let us know.

  2. Had the SE version for a week long test drive, is amazing and really did return mpg in mid 50s over 500 miles mixed cycle driving,
    Only challenge is the high lease costs for company car.

    1. Hi,

      Lexus CT had a slightly higher official fuel economy figure, based on the old NEDC test. Both vehicles were discontinued in the UK before the tougher new WLTP test came into force.

      Please take a look at our pre-owned cars here: https://www.lexus.co.uk/pre-owned/


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