Fifth Gear is a British motoring television magazine series which has been broadcast since 2002. Originally shown on Channel 5 from 2002 to 2011 (and branded as 5th Gear until 2005), it began as a continuation of the original version of the BBC show Top Gear, which ran from 1977 until being cancelled in 2001. It moved to the Discovery Channel in 2012, then in 2015 to History; since 2018 it has been broadcast on Quest. Following a 2021 relaunch, with an emphasis on electric cars, it has been branded as Fifth Gear Recharged. The show is currently presented by Vicki Butler-Henderson, Sid North, Karun Chandhok and Jason Plato with Grace Webb and engineer Jimmy de Ville also involved in reports. Its former presenters include Quentin Willson, Adrian Simpson, Rory Reid, Jonny Smith, former racing driver Tiff Needell and Car SOS host Tim Shaw.

Fifth Gear was first broadcast on 8 April 2002, featuring the same format and many of the same presenters, including Willson, Needell, Butler-Henderson and Simpson, as the BBC's Top Gear. Channel 5 originally wanted to carry on using the Top Gear name, but the BBC refused as it still operated the Top Gear magazine; the BBC relaunched Top Gear with a drastically revised format later in 2002, placing a strong focus on comedy and general entertainment. Fifth Gear has been referenced in Top Gear, such as when a barn fire damaged Top Gear property, host Jeremy Clarkson satirically claimed that Fifth Gear had "burned our furniture."Needell announced Fifth Gear's cancellation on 24 May 2016. On 14 June 2018, Needell announced on his official Twitter account that he had been doing some filming work for a new series of Fifth Gear which aired in September 2018 on Quest, but by 2019 had left the show to join Lovecars.com and their ITV4 programme On the Road.Repeats of Fifth Gear also started being broadcast on UKTV channel Dave in April 2008 and later on Discovery Turbo, with early episodes of the show being streamed '24/7' via the British feed of Pluto TV in 2019.