The vehicle shifts erratically in stop and go traffic with frequent surges and jolts at low gears. This also occurs at higher temperatures (after driving for a while on hot days) and during stop and go traffic on hot days. Transmission engages slowly after a full stop and often with a jerk, especially felt when stopped at an incline. All of these jerks and jolts occur around gears 1 or 2 and during stopping or starting from stop.

- Marietta, GA, USA

With less than 50,000 miles on it, my S60 just completely stopped working on my way to work. While pulling out of my development, the entire engine, power steering - everything shut down. I had to coast into a turning lane to put on my flashers. I had not gone more than 3 minutes from my house. After Volvo had it for a few days they told me that the alternator belt had jumped off, hitting the alternator, fraying the belt. This then resulted in the belt wrapping around another part of the engine impacting the drive belt. This resulted in damage to the drive belt, alternator, 1/3 of my engine and my cylinder block. Volvo is blaming this on a faulty belt tensioner, yet they are making me pay for part of the repair which is a total cost of $6,000. This is clearly a defective part - either it was installed incorrectly or it was not properly built as a belt does not just "jump". I was lucky that I had not yet gotten onto the highway or I would have been injured along with other people if not worse. This is a huge safety concern and Volvo does not seem to want to admit complete failure here. This car has been serviced regularly and at the same dealership.

- Atlanta, GA, USA

When coming to a stop, once stop has completed, while foot is on the brake at random times the vehicle we jolt forwarded. The jolt would be in comparison to the feeling of being rear ended at a complete stop. I have taken the car to the local Volvo dealership and they checked it and came back with nothing being wrong. On the fourth return to the dealership I asked if anyone drove the vehicle. The answer was no. The service department specialist asked if he could drive the vehicle home for the night. I said yes, because this problem happens randomly. The next day, the service specialist said that he experienced the same problem. Again, nothing they said could be done because no error code appeared. The trans jumps too much, to be normal.

- Wadmalaw Island, SC, USA

When I am sometimes either stopped at a stop sign, intersection or on a highway, the transmission will almost stop, buck and then resume driving.

- Vestal, NY, USA