The BMW 1 Series is a range of subcompact executive cars manufactured by BMW since 2004. The first generation was produced in hatchback, coupe and convertible body styles. Since the second generation, the coupe and convertible models have been marketed as the 2 Series, therefore the 1 Series range no longer includes these body styles. A sedan model became available for the Chinese market in 2017. The 1 Series is BMW's entry level of model range. Unusually for a small car, the 1 Series range is mostly rear-wheel drive, with optional all-wheel drive being available on some models. An M version was produced for the first generation, the BMW 1 Series M Coupe, which was succeeded by the BMW M2. The 1 Series was redesigned for 2019 models, featuring the UKL2 front-wheel-drive platform which is shared with the X1. It will be offered with 5 engines, the base model, while the range-topping model is the M135i xDrive. Transmissions include a six-speed manual, a seven-speed dual clutch automatic and an eight-speed automatic.