You may notice the engine jerks from within its compartment. About a month ago, i changed my oil, and then took the truck for a spin. 5 Causes Of The Car Vibrating At High Speed Wuling During the drive, when i reached 40mph, my truck would shake violently, but would stop when i decelerated below 40 mph. My car shakes when i drive over 40mph . When car vibrates when accelerating, it’s not unusual to get a whiff of burning odor when the car stops. (i know this is pretty irrelevant). Now, the car has just reached 67k and is a 2005. My truck is 2wd, so i'm thinking that there would be no true death wobble. The most common reason for a car to shake is related to tires. My car shakes when i drive over 50 mph, and shakes more as i accelerate. I have a 2010 lexus es 350 which vibrates slightly at about 40 to 45mph. It reoccurs anywhere from 20 seconds up to a few minutes. In addition, constant velocity joints also wear out. If something happens to bend the dr...