L & N Diesel Emissions Testing & Repair is a family-owned DOT shop that has been serving the Denver area since 2003. The facility provides light duty, heavy duty, and all-wheel-drive diesel emission testing and repair services. The diesel and gas mechanics are trained and certified specialists, offering automotive repairs that customers can rely on. The business is dedicated to treating each vehicle with personal care and respect, a quality often missing in larger repair shops. Their aim is to be the top diesel emission shop in Denver, providing complete auto emission testing, service, and repair. Customers have praised the quick service, fair pricing, and friendly staff, making L & N Diesel Emissions Testing & Repair a trustworthy choice for diesel vehicle owners in the area. Many appreciate the efficiency and the convenience of Saturday appointments, highlighting that the shop honors appointment times and ensures a fast turnaround. While the outside may seem uninviting, the service inside is consistently excellent, making it a preferred destination for diesel emissions testing in the Denver Metro area.
This place is amazing!!! I can’t say it loud enough!! These guys got me in and out super quick and are so knowledgeable!!! They have a customer for life!!!
June 2026
I needed a vin inspection and they were able to do it for me right away!
May 2026
Quick service for diesel truck emissions, in and out 15 minutes.
