Sytner took a year out in 1986, but returned in 1987, having joined Prodrive who had taken over the factory BMW contract, running the BMW M3. Success was immediate, with several wins, before taking the BTCC title outright in 1988. Sytner won his class, the new look 2.0 litre super touring formula, and came second overall in 1990, despite strong competition from 1989 champion John Cleland in the works Vauxhall Cavalier. The two even had a controversial collision at the Birmingham Superprix late in the season. Sytner's final season was 1991, which saw him retire from the sport at the end of the year to concentrate on his car dealership.