The McLaren M28 is a Formula One racing car built and run by McLaren in the 1979 Formula One World Championship. Powered by a conventional Ford Cosworth 3-litre engine, the M28 was designed and wind tunnel tested during the latter half of 1978, at around the same time as Ronnie Peterson was mooted to join the team for the following season. The car was noticeably larger than contemporary designs and was much bulkier looking. The bulky design had a sharp impact on top speed, and the car was one of the slowest through speed traps.