Philips X-tremeVision

This was the Best Buy in our test of H7 bulbs last year, but it struggled to repeat its winning form among the H4 products.

One bulb delivered a less focused beam, with a blurred glare cut-off, which kept the wide and bright light focus away from the crucial 75-metre scoring point. The second bulb also kept the brightest light too close to the car, and this ultimately dropped the X-tremeVision down in the standings.