Audi has become the first car manufacturer to have its LED headlights validated as contributing to fuel-economy, with the bulb alternatives shaving off over a gram of CO2 emissions per mile. The LED lights - which Audi uses on five models in its range, from the cheapest A3, through to the R8 coupe - were run through the EU Commission's dynamometer and found to trim CO2 output by 1.61g/mile, as well as using less power than halogen lights.
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