The BMW M3 is a high-performance version of the BMW 3-Series, developed by BMW's in-house motorsport division, BMW M. M3 models have been derived from the E30, E36, E46 and E90/E92/E93 3-series, and sold with coupe, saloon and convertible body styles. Upgrades over the "standard" 3-Series automobiles include more powerful and responsive engines, improved handling/suspension/braking systems, aerodynamic body enhancements, and interior/exterior accents with the tri-colour "M" (Motorsport) emblem. Over the years the M3 and M5 have become the benchmark vehicle against which most sport sedans in its class are compared despite competition from Mercedes-AMG and Audi Quattro GmbH (Audi RS. The last M3 coupe rolled off the assembly line in Germany on 5 July 2013. Part of BMW's renumbering to move the 3-Series coupe and convertible to the 4-Series, the M3 name will remain with the saloon version as the coupe version has ceased production and has been replaced by the M4 Coupe starting with the 2014 model year.