Volvo S40 owners have reported 1 problem related to engine shut off without warning (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Volvo S40 based on all problems reported for the S40.
I was on highway 410 headed to i35 in rush hour traffic and the power to the engine shut off while I was driving. . I had to glide the car to safety.
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all problems of the 2006 Volvo S40
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