DeMuro's focus is on the automotive industry; his car review-focused YouTube channel has over 4.9 million subscribers as of January 2025.

[4] He then went on to study at Emory University in Atlanta, Georgia, obtaining a bachelor's degree in economics, and met his wife while he was working as a resident advisor there.

[13][14] While working for Jalopnik, DeMuro wrote columns, answered letters from readers, shot videos for his YouTube channel, and occasionally reviewed cars.

[10] At the recommendation of readers, DeMuro bought a 2007 Aston Martin V8 Vantage in January 2016 with a "bumper-to-bumper" warranty, of which he documented his ownership.

The first car to receive the DougScore was a 2006 third-generation Range Rover that was purchased from CarMax in Marietta, Georgia, in December 2012.

[2] The Range Rover was the subject of its own series of videos and articles where DeMuro recounted all of the repairs he had to make to the vehicle over his time owning it, aided by a six-year and 66,000-mile bumper to bumper warranty he purchased for $3,899; by the time the warranty expired, DeMuro's vehicle had received over $21,000 in repair work.

It features more opinion-based and vlog-style content, as well as question and answer videos; DeMuro stopped updating the page regularly and combined it with his Cars & Bids channel in 2023.

[24] DeMuro appeared in the Jay Leno's Garage season three episode "Larger Than Life", in which he tried to recognize cars while being blindfolded, in June 2017.

These vehicles were a 2018 Kia Stinger GT2, which he purchased to replace the E 63 AMG wagon;[29] a 2020 Land Rover Defender, which he bought to replace the Stinger and which was the first car DeMuro bought brand new for himself;[30] a 1994 Audi RS2 Avant, which was imported from Japan via Canada;[31] and a 1998 Mercedes-Benz A140, which was imported in 2023.