The 135i earns a big checkmark in the performance column. Equipped with BMW’s brilliant twin-turbocharged, 3.0-liter inline-six with 300 hp and 300 lb-ft of torque, the 3700-pound ragtop shoots to 60 mph in just 4.9 seconds.Straight-line speed is but one element of the equation, and we’re glad to report that the 135i checks out in [...]
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