According to the actual measurement, the acceleration time of BMW 3 Series 100 kilometers is 10.60 seconds, which is for reference only. The acceleration video of BMW 3 Series is as follows: BMW 3 Series Engine Maintenance: 1. Idle for a while when the cold car starts. Engine wear during cold start accounts for about half of the total wear. Preheating the car at normal idle speed can reduce this wear and prolong the service life of the engine. At low temperature, metals will show low elasticity and wear resistance; Only at the working temperature can the engine reach the normal fit clearance and keep the best working condition. 2. The engine fuel system should be cleaned and maintained during normal driving10000km. There are mainly two different cleaning methods: one is to directly add "cleaning agent" into the fuel tank according to a certain proportion, and carry out internal circulation cleaning under the normal driving state of the automobile; Another way is that special equipment is needed to clean the engine at idle speed, and the finally decomposed carbon colloid is discharged with the exhaust gas. 3. Cleaning and maintenance of engine lubrication system. Pour the cleaning agent into the crankcase, idle for 5 to 10 minutes, and then drain the old oil. At this time, the sludge, dirt and carbon deposit in the lubrication system will be fully decomposed and discharged with the old oil, but it should be noted that the oil filter element must be replaced at the same time. This kind of cleaning and maintenance is suitable for oil change. Oil protectant can be added after cleaning, which can effectively prolong the service life of vehicle parts and enhance engine power. ) 4. Cleaning and maintenance of engine cooling system. This cleaning and maintenance can play the role of descaling, derusting, rust prevention and acid prevention, and the descaling rate can reach above 85%. Simple operation: Just add "detergent" into the water tank and clean the car under normal driving conditions. After several hours, drain the waste water in the water tank and add new coolant or unfrozen liquid again.