Meet the people working on your car.

Mark grew up in the shop. ASE-certified at 19. Master-certified at 27. Took over Westside from his father Karl in 2014. Spent two years at the Boulder Volkswagen dealership before joining Westside full-time in 2002.

His specialty is the early diagnosis — the kind that catches a $200 cooling-system problem before it becomes a $4,800 head-gasket job. His least favorite phrase is "I should have brought it in sooner."

Off the floor, Mark restores air-cooled Volkswagens (a 1965 Beetle, a 1971 Bus in progress) and tries to keep his 2008 Audi RS4 Avant out of the shop he owns — usually unsuccessfully.

Diego came to Westside in 2015 after going through the Audi Academy training program. His specialty is Audi and VW timing-chain work and DSG transmission service — he can do a Mark 7 GTI timing-chain job in 6 hours, the fastest in the shop by a noticeable margin.

Diego is the tech most likely to be three layers deep into a wiring diagram when Mark asks him a question. He is also the tech who will walk a customer to the parts bench and explain exactly what he found, in plain English, before any work begins.

Originally from Pueblo, came to Denver in 2012. Drives a 2016 Audi S3 he bought used and modified slowly over four years.

Lisa joined Westside in 2018, six months after she and Mark got married. Twelve years at a regional credit union before that, then one year at a Colorado Honda dealership service counter — long enough to learn the service-writer game, short enough not to become it.

Lisa runs the appointment book, the customer communication, the parts ordering, and the books. She is the reason the phone gets answered within two rings during shop hours. She is the person who calls you with the diagnosis and the estimate, and she is the person who calls you back when the work is done.

Her specialty is the difficult call — the one where the news is more expensive than the customer was hoping. She delivers it straight, with options, and with respect.