Two problems related to engine shut off without warning have been reported for the 2008 Mercury Mariner. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Mercury Mariner based on all problems reported for the 2008 Mariner.
My wife was driving on her way home, and out of nowhere the steering felt weird, and while driving the car shut off. No power steering or power brakes (due to engine shutting off) and we do not know why this happened.
The contact owns a 2008 Mercury Mariner. While driving 40 mph, the vehicle hesitated and would not accelerate past 25 mph. In addition, the vehicle accelerated rapidly without warning. The contact stated that the vehicle shut off on numerous occasions and the check engine indicator illuminated briefly without warning. The vehicle was not repaired. The manufacturer was made aware of the failures. The failure mileage was 44,000.