Car Will Not Start problems of the 2002 Volkswagen Passat

I was driving the car about 30 minutes prior to incident traveling at approximately 45 mph with my child in the car and without warning of any kind my car shuts off and I almost got rear ended . I was able to coast to the side of the road put the vehicle in park tried starting the vechile and it started right away . I drove vechile home without incident . I took the vechile to a mechanic and they couldn't find a problem no engine codes where present . I drove the vechile for a week and this same scenario played out again I wasn't driving the car any further at this point because again I had my child in the car and again alonso got rear ended . Had it towed to a different mechanic and they to were unable to find any engine codes or problems . I had my boyfriend drive the car home and it stalled on him at a red light . Car wouldn't restart so he had to push the vechile across a lane of traffic to the shoulder of the road . When the car cooled down for 2 hours it restarted and drove fine no check engine light or codes present . . After a month of headaches with the car we discovers it was a faulty engine speed sensor this is a very dangerous part to fail without warning leaving the car powerless if this happened on the freeway I wouldn't have been so lucky I imagine.

2002 Passat wagon, automatic transmission, accelerator pedal became stuck while getting on highway during a cold morning. Brakes were non-responsive even when car was put into neutral. Car continued to accelerate, driver put car into a lower gear which slowed down the car a bit and finally put the transmission in "park". This caused the car to eventually stop. To get off the highway, driver slowly drove off onto the exit ramp after calling 911 and being advised to get off the highway which had no shoulder. After that the car and brakes appeared to function normally. The next morning car would not start due to the battery being drained and was towed to vw mechanic. After being inspected for 2 days the mechanic did not find anything wrong with the accelerator or the breaks and there was no evidence that the pedal got stuck on the floor mat. No error codes were found on car's computer. We had had no prior problems with the car other than a dash message indicating a break fault would occasionally light up on cold wet days. The vw mechanic could never find anything wrong with the breaks after repeated visits and attributed the message to a computer glitch. After the incident with the accelerator we traded the car in for a new one of a different make since we did not feel safe driving it, despite assurances that nothing unusual was found with the car.

Vehicle failed to start because the battery was drained. This occurred 4 times. Dealership replaced the battery, but the problem recurred. Dealership did not know what electrical components were draining the battery.