My Xc90 is shuttering at interstate speeds as well as below. When I purchased, they had to machine the rotors and said they balanced the front tires. It did not help much. The brakes shake less. I'm sure the entire rotors are warped. All this with 12k miles on the vehicle.

- Bellview, FL, USA

Electric parking brake engaging violently at highway speeds at least. 3 times. Resulting in abrupt stop in moveing traffic! dealer in no hurry to repair suggesting bring back when they are able! am notifying Volvo, dealer, they will assume all liability for injury or death for this defect and lack of concern in repairing ( told a software problem, but also told caused damage to other components due to violent and abrupt stops! very uncomfortable especially since repair mgr is so arrogant!

- New Roafs, LA, USA