The hard shoulder and one lane of the southbound carriageway were shut between Junction 10a and Junction 10 after the car caught fire at around 12.30pm.
Fire crews attended the scene, where smoke was pouring out of the front of a blue Audi.
The fire caused 30 minute delays for southbound drivers, with congestion as far back as Junction 11 for the M6 Toll. Traffic was also moving slowly on the M54 eastbound near Junction 1 as a result.
By 1.50pm the road was clear and all lanes had reopened.