From 2017, Harris is one of the three main presenters of Top Gear, after previously making regular appearances throughout the twenty-third series in 2016. He has his own YouTube Channel, Chris Harris on Cars, where he and Neil Carey produce and film their own automotive reviews and content on an irregular basis. On 28 June 2016, the Chris Harris on Cars web series was moved from YouTube to the official Top Gear website and in July 2016, Chris Harris on Cars was launched on BBC America.
Harris began his career in the automotive industry by working for Autocar magazine, performing various menial labour tasks, or, as he himself describes it, "cleaning ashtrays." Eventually, he was promoted to an official road-test editor within Autocar magazine, and gained recognition and credibility as a journalist by writing many automotive reviews, as well as a regular opinion column. At Autocar magazine, Harris earned the nickname of "Monkey," a reference to an unseen character "Monkey" Harris in Only Fools and Horses. In 2008, Harris left Autocar magazine to co-found a new web-based digital platform called Drivers Republic. A year later, the enterprise ceased operations. In a statement, Drivers Republic explained the abrupt termination was due to "differences in our vision about future priorities...." Immediately after the shutdown, Harris joined Evo magazine as a writer / reviewer, publishing his first article there on 12 October 2009. He published for Evo magazine every few months until 21 December 2011, but eventually resumed writing for Evo magazine on 10 April 2015.
Subsequently, Chris Harris created an opinion and review YouTube series in partnership with /DRIVE. This new series aired weekly (starting in early 2012) on /DRIVE's YouTube channel, called /CHRIS HARRIS ON CARS. Each episode featured a different car, either owned by Harris, or given to /DRIVE temporarily from the manufacturer. The series greatly expanded /DRIVE's viewership, with 104 videos together amassing over 3,500,000 views in two years. After two years of hosting automotive videos, Harris left the network in 2014 to create his own YouTube channel. He maintained a positive relationship with /DRIVE, remaining "a close friend of the /DRIVE brand...."
On 27 October 2014, Harris' YouTube channel, Chris Harris on Cars, was created. Harris partnered with longtime colleague and cameraman / editor Neil Carey and still shoots all Chris Harris on Cars (commonly abbreviated "CHOC") independently. Chris Harris on Cars has over 350,000 YouTube subscribers and nearly 30,000,000 views. In addition, on 6 November 2014, Harris began writing for Jalopnik, an online automotive blog administrated by Kinja. Harris also has since partnered with /DRIVE through NBCSN, and now appears on American television channel NBCSN, reviewing cars and partaking in automotive related activities with other hosts, on a regular basis.
In February 2016, Harris officially joined the new cast of Top Gear. Harris served as a recurring presenter for the television show in 2016, but was promoted to a main presenter following the resignation of Chris Evans. From the twenty-fourth series, he presents the series alongside co-hosts Matt LeBlanc and Rory Reid.