In 1983, Porsche returned to Formula One, supplying engines badged as TAG units for the McLaren Team. It was a success as the Porsche-powered cars won two constructor championships in 1984 and 1985 and three driver crowns in 1984, 1985 and 1986.
Less than ten years later, in 1991, Porsche returned as a engine supplier, but this time the results were disastrous: Footwork, the Porsche-powered cars, didn’t score a single point and at over half of the races it even failed to qualify. Since that year, Porsche has not participated to Formula One.
Still, lightly-modified Porsches participate in many competitions around the world, mostly in amateur classes for enthusiasts. The only professional category is the Porsche Michelin Supercup raced as a support category for European Formula One rounds.