Why does the car shake when braking at 60-80 km/h?

[Jamie]

The reasons for the car shaking when braking at 60-80 km/h are as follows: 1. Engine failure: The phenomenon of failure to start may manifest as no starting signs when turning on the ignition switch, the starter making noise but failing to rotate, the starter rotating but unable to crank the engine, or the engine being cranked by the starter but failing to start. Starting difficulties may occur in freezing or extremely hot weather, at normal temperatures, or when the cold engine has difficulty starting initially but starts normally when warm. These phenomena are related to the main injector, cold start injector, and temperature control switch. 2. Automatic transmission failure: Symptoms include slow acceleration, strong impact during automatic gear shifting, excessively high oil temperature, lack of high-speed gears, failure to start, and inability to shift the gear lever. Most automatic transmission failures are caused by untimely maintenance and adjustment, apart from component failures due to long-term use.