Vauxhall's VXR8 Sport Saloon Wins MPG Marathon Award, No Really

In an eco-marathon, you normally expect the winner to be a hybrid, a diesel or some other super-frugal -and usually underpowered- car. Well, in the Fleet World MPG Marathon the champion had no less than 431-horses kicking and screaming to be unleashed under its bonnet.

You read that correctly: the LS3 6.2-liter V8-powered VXR8 - essentially a Holden HSV rebadged as a Vauxhall for the UK market- won the two-day, 350-mile economy trial.

How did this happen? There's a simple explanation: this award wasn't given to the most fuel efficient vehicle in absolute numbers, but to the one that recorded the highest percent improvement over the official fuel consumption figures.

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