Car had a known issue regarding inappropriate oil consumption and was awaiting repair by Volvo dealership. While merging onto highway and accelerating, car lurched, check engine light came on, and shortly after there was a warning regarding reduced performance. The car was maneuvered to the closest exit and parked. During this time, approx 90secs, all major warning lights came on and smoke started coming up from engine. We quickly pulled to the side of the road (was unable to put car in park) and exited the vehicle as smoke was entering the cabin. There was a fire under the engine compartment that quickly engulfed and consumed the front of thr car.