M4 corridor bridge, serving Chepstow, being renumbered the M48, although the area is still generally considered as falling within the M4 corridor. Since the start of the 21st Century there has been evidence of more investment west of Cardiff, such as: M4 corridor The M4 corridor is an area in the United Kingdom adjacent to the M4 motorway, which runs from London to South Wales. It is a major high-technology hub. Important cities and towns linked by the M4 include (from east to west) London, Slough, Bracknell, Maidenhead, Reading, Newbury, Swindon, Bath, Bristol, Newport, Cardiff, and Swansea. The area is also served
BMW M4 M4 CS utilises the same engine as the standard M4 which generates and of torque. The BMW M4 DTM competes in the Deutsche Tourenwagen Masters since 2014. Marco Wittmann won the 2014 and 2016 championships. The M4 GT4, aimed at amateur drivers, debuted at the 2017 24 Hours of Nürburgring. It features a 3.0L turbocharged straight-six engine producing , and a 7-speed dual clutch transmission. BMW M4 The BMW M4 is a high-performance version of the BMW 4 Series automobile developed by BMW's motorsport division, BMW M GmbH. Part of the renumbering that splits the 3 Series coupé and convertible