Study: Most headlights need improvement

The headlights on your car might not be as good as you think, according to a new study.

The study from the Insurance Institute of Highway Safety is the first in which they studied headlights on 31 midsize cars.

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All but one of the cars received ratings of "acceptable," "marginal" or "poor."

The Toyota Prius was the only car to get a "good" rating but only on cars that have a $7,000 upgrade to better headlights with "high beam assist."

Some of the worst-performing headlights were found on the most expensive luxury vehicles. For example, the BMW 3 series halogen lights had a "marginal" rating, and two Mercedes models received "poor" ratings.

Find all the ratings at the Insurance Institute for Highway Safety.

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