Some Volkswagen Tiguan owners report experiencing issues related to coolant hose bursts, which can lead to engine overheating due to sudden coolant loss. This loss disrupts the engine's cooling system, often caused by the breakage of the coolant hose pipe. Owners have noted that coolant hoses can burst due to factors like age, wear, corrosion, high pressure, mechanical damage, or improper clamping. It is crucial for owners to address a burst coolant hose promptly to prevent further engine damage and ensure the cooling system functions properly. In such situations, it is advised to stop driving the vehicle immediately and resolve the coolant issue to avoid potential engine damage.

The 1993-2002 Toyota Supra and Toyota Supra Turbo radiator may crack near the radiator cap. When it cracks, the engine will begin to run warmer than normal, and eventually will overheat. Overheating will also be accompanied by a sweet smell around the front of the vehicle, most noticeable under the hood. Replacement of the radiator is the only solution, as the crack occurs on plastic.