What Impact Does Replacing a Car Engine Have on the Vehicle?
2 Answers
Replacing a car engine will not affect the overall vehicle. Apart from the engine, components such as the transmission, drive axle, steering mechanism, and braking system remain largely unchanged. However, the new engine requires a break-in period, and it is crucial to ensure proper installation. It is recommended to have a professional automotive engineer perform the installation. Engine damage can occur due to insufficient oil or water, leading to cylinder scoring, bearing failure, or valve damage. Before replacing the car engine, it is necessary to register the change with the vehicle management office within ten days. When installing a new engine, always check that the packaging is intact, verify the presence of a valid motor vehicle safety technical inspection certificate, and ensure the engine interior is clean and tidy.
I replaced the engine with a high-performance version, and the car drives incredibly thrilling now, with much faster acceleration—it makes me feel like a race car driver. However, there are quite a few downsides: the price is outrageously high, costing 20,000 to 30,000 RMB for a new engine plus installation fees, and you need to find a skilled repair shop; otherwise, you’ll face numerous compatibility issues—like rough gear shifts, frequent engine warning lights, and severe vibrations at high speeds. It also affects the car’s overall reliability—I’ve had constant minor issues afterward, such as faulty sensors causing unstable idling. Financially, it’s not cost-effective in the short term; it takes about two to three years of fuel savings to break even. The resale value also dropped, as buyers often worry about the engine’s origin. In short, while it enhances driving excitement, the risks are significant, especially for performance cars, so careful selection is a must.
