What is the appropriate speed for a new car?

[AllieLee]

During the break-in period of a new car, the speed should not be too high, generally controlled between 50-90km/h. Here are other precautions regarding driving a new car: Avoid driving with a full load: Because excessive load will increase the burden on the engine and transmission, causing the engine to output excessive power and leading to excessive wear of mechanical parts. Therefore, avoid driving with a full load during the break-in period to extend the service life. Avoid prolonged driving in low gear: For automatic transmission models, although the manual gear shifting process is eliminated, under good road conditions, the owner should accelerate continuously to allow the transmission to shift up smoothly, avoiding the lack of break-in process for high gears.

[MacBarrett]

Just got the new car and need to pay attention to the break-in period. I was very particular about driving the first 1,000 kilometers. In the city, I basically cruised below 60 km/h, and kept it around 80 on elevated roads or expressways. The most important thing is to avoid maintaining a constant speed for too long. For example, on highways, I never exceeded 100 km/h and even switched to manual mode to run at different gears. I tried not to let the engine RPM exceed 3,000, and aggressive acceleration or sudden braking was a big no-no. The tires and brake pads also need breaking in, so anticipating road conditions in advance is crucial. Don’t be too gentle or too aggressive—after about two weeks, I could clearly feel the throttle response becoming much smoother.

[GageFitz]

The most important thing during the break-in period isn't strictly adhering to speed limits, but monitoring the tachometer! When I first picked up my car, the dealership mechanic repeatedly emphasized: keep the engine below 2,500 RPM for the first 500 kilometers, even on highways—it's best to stay around 90 km/h. I remember once encountering a long downhill section on an elevated road, so I quickly shifted to manual mode and used lower gears to control the RPM. The transmission also needs breaking in, so with automatic models, I deliberately shift between different speed ranges to ensure all gear teeth mesh properly. After a cold start, it's essential to drive slowly for two to three minutes—avoid heavy throttle until the engine oil reaches operating temperature.

[MadisonAnn]

The first 300 kilometers are the most delicate period for a new car. I adhere to three principles: First, avoid overloading - transport the pile of renovation materials in the trunk in two trips. Second, bypass congested routes to prevent low-RPM engine crawling and carbon buildup. Third, implement speed gradient control - keep it under 60 km/h for the first three days, then gradually increase to 80 km/h. Pay special attention to avoiding cruise control to allow natural gear break-in. On weekends, I deliberately drove dozens of kilometers on suburban roads, testing the chassis on both asphalt and gravel surfaces. Now at 1,500 kilometers, fuel consumption has noticeably dropped by 0.8 liters compared to when the car was first picked up.