Unlike the electric Chevy Volt, BMW's Mini E doesn't have a heater to keep the battery at optimum temperature when it gets cold outside—sounds like a minor problem, but it halves the Mini E's range. Eep.

Testers of the Mini E have been finding that at 23 degrees F, the car only managed to eke out 55 miles to a charge, nearly half the advertised 100 miles. Even in more mild winters, like Washington, DC, the car gets 20% less range than in warmer climes. Disappointing, to say the least—we hope BMW works out this kink before the official rollout. ...

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