Lexus LS 500h MPG & CO2 emissions

The claimed fuel economy of the LS 500h beats that of non-hybrid rivals, but electric driving range is limited

MPG (comb) MPG (high) MPG (low) CO2
36.2mpg 41.5mpg 28.3mpg 147-161g/km

The Lexus LS 500h is available with rear or four-wheel-drive, and this choice has a bearing on the car's fuel economy and CO2 emissions ratings.

The rear-wheel-drive version is claimed to achieve 36.2mpg, with CO2 emissions of 147g/km. The heavier four-wheel-drive version emits 161g/km of CO2.

Lexus LS 500h MPG & CO2

Those figures make the Lexus LS 500h one of the least fuel-efficient hybrid cars you can buy today, but they still impress compared to those of petrol-powered rivals with similar performance.

For instance, the Mercedes S-Class S 450 returns 38.2mpg, with CO2 emissions of 169g/km when the smallest 18-inch wheels are chosen. The popular S 350 d diesel, meanwhile, beats the LS 500h with 48.7mpg, but its 153g/km CO2 emissions are punished by having not been certified to the latest standards.

It means the Mercedes falls into a high 35% bracket for Benefit-in-Kind (BiK) company-car tax, while the rear-wheel-drive Lexus can boast a lower 30% rating. In four-wheel-drive form, though, the LS 500h's rating increases to 33%.