can you drive a car with a broken motor mount

[Lawrence]

No, you should not drive a car with a broken motor mount. It is a significant safety risk that can lead to further damage to your vehicle and potentially cause an accident. While the car might still move, the engine is not properly secured, leading to excessive vibration, unusual noises, and a risk of the engine shifting dangerously, which could damage other components like the radiator, hoses, or throttle linkage.

A motor mount's primary job is to secure the engine and transmission to the vehicle's frame or subframe. It also absorbs the vibrations and torque generated by the engine. When one breaks, the engine can lift and shift during acceleration or lurch when changing gears. You might feel a heavy vibration through the steering wheel and floorboard, especially at idle or low speeds. A loud clunking or banging noise from the engine bay during acceleration or when starting the car is another common symptom.

The most immediate danger is the engine moving enough to contact other parts. This can snap coolant hoses, crack the radiator, or even cause a loss of throttle control. In severe cases, a severely broken mount can allow the engine to shift so much that it affects the drivetrain, potentially damaging axles or the transmission. The cost of replacing a motor mount is far less than the repair bill for the collateral damage it can cause.

Here are common symptoms and the associated risks:

Symptom	Description	Potential Risk
Excessive Vibration	Shaking felt in steering wheel, floor, and cabin, particularly at idle.	Discomfort, loosening of other components.
Loud Clunking Noises	A distinct metal-on-metal bang during acceleration or gear changes.	Engine impacting frame; indicates severe failure.
Visible Engine Movement	Engine visibly rocks back and forth when revved while parked.	Confirms mount failure; high risk of collateral damage.
Misaligned Throttle Linkage	Engine movement pulls on cables, causing erratic throttle response.	Loss of vehicle control, safety hazard.
Damage to Nearby Components	Broken or leaking hoses, cracked radiator, damaged fan shroud.	Engine overheating, fluid leaks, costly repairs.

The safest course of action is to have the vehicle towed to a repair shop. If you must move it a very short distance (like from a street into a driveway), do so at an idle speed with extreme caution, but understand you are accepting all associated risks.

[EdwardRose]

I drove my old truck for a week with a busted mount because I was too busy to get it fixed. Worst decision. The shaking was so bad it felt like the whole dashboard was going to fall out. Every time I hit the gas, there was this awful thump from under the hood. I finally took it in when the check engine light came on—the engine had shifted and yanked a wire loose. Don't be like me. Get it fixed as soon as you notice it.

[DiEmilio]

Think of it like this: your engine is a heavy, powerful metal box. The motor mounts are its seatbelt. A broken mount is a broken seatbelt. When you accelerate or brake, the engine isn't restrained properly. It'll slam around, damaging everything near it. You might get away with a slow, careful drive straight to the nearest mechanic, but it's a gamble. The risk of causing thousands in damage isn't worth saving on a tow truck.

[David]

From a pure cost perspective, driving on a broken motor mount is a bad investment. The mount itself might cost a couple hundred dollars to replace. But if you continue driving, the unrestrained engine can easily destroy coolant hoses, the radiator, or AC lines. That repair bill can easily jump into the four figures. It’s a classic case of a small, manageable problem turning into a major financial headache. The most economical choice is to address it immediately.

[Barrett]

The biggest concern is safety. A severely broken mount can allow the engine to lift and jam the throttle linkage wide open, or it can snap a brake line if it's in the path of movement. You'd lose control of the car. The intense vibrations also make it hard to judge the steering and can fatigue other components, leading to unpredictable failures. It's not just about car damage; it's about preventing an accident. Your safety and the safety of others on the road is the top priority here.