Used cars and trucks for sale in Longmont, CO

Low upfront prices, no dealer fees, and a no-pressure buying experience since 1974.

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Quality used cars and trucks for sale in Longmont, CO

Used cars under $10,000

Used cars under $15,000

Cars with Apple CarPlay

Cars with backup camera

Get a head start on your next vehicle

Begin the financing process online before visiting Red’s Auto & Truck. Our team can help you take the next step toward a used car or truck with less back-and-forth at the dealership.

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Used cars displayed outside the Red’s Auto & Truck dealership building in Longmont, Colorado.

Available vehicles

Truck | Car | SUV | Van | Convertible | Hatchbacks

Hot

Stock # 2026-402

2024 Cadillac XT6

AWD Premium Luxury

23,519 miles

$43,999

Est. Payment
$649/mo

Stock # 2026-400

2022 Mercedes-Benz GLB 250

4MATIC

28,504 miles

$29,999

Est. Payment
$443/mo

Hot

Stock # 2026-386

2024 Jeep Grand Cherokee 4xe

Anniversary Edition

16,071 miles

$31,763

Est. Payment
$469/mo

Hot

Stock # 2026-383

2025 GMC Sierra 2500HD

4WD Crew Cab Standard Bed AT4X

28,290 miles

$84,999

Est. Payment
$1,255/mo

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Real experiences from Red’s Auto & Truck customers

Ian Dumpert
7/17/2026

Red's did a great job selling me a nice used Lexus. It was a pleasure working with Nathan. 10/10 would buy from again!

Kerry Vilcek
7/14/2026

We had a great experience buying our car. The staff was friendly, answered our questions, and made the process straightforward. We’re happy with our purchase and would recommend them to anyone looking for a smooth car buying experience.

Josiah Ramu
7/11/2026

Mike the owner was great very friendly and super helpful and engaging and answered everyone question with detail would definitely come back

Samantha W
7/11/2026

We had a great experience purchasing our EV car from Red’s! We worked with Mike (the salesperson) and Mike (the owner). We utilized the VXC credit from the state of Colorado which was seamless. They had several EV’s to choose from! We also enjoyed checking out the classic cars on their show floor. Thank you!

slimsmarti
7/10/2026

Just purchased my 1 ton dually from Red’s Auto & Truck in Longmont. I found the staff to be very helpful and their communication was excellent. I always received a follow up from Mike in sales, even when he was busy with customers. I really appreciated having the car fax and window sticker information easily accessible (and free) to me to help with my decision. Thanks, Red’s and Mike!

Jennifer Hill
7/3/2026

I walked in without an appointment and was greeted immediately. Mike Wilson was happy to show me the vehicle I came to see, and ultimately bought! The whole process was friendly and quick. I would certainly recommend this dealership to others.

Aerial view of the Red’s Auto & Truck dealership building and vehicle lot in Longmont, Colorado.

Serving Colorado drivers with honesty since 1974

Red’s Auto & Truck has been part of the Colorado automotive community for decades, offering used cars and trucks with a straightforward, no-pressure approach. Founded by David “Red” Widhalm and now operated by his son Mike, the dealership continues to focus on fair pricing, personal attention, and vehicles customers can feel confident about.

Learn more about us

Simple financing support

Explore credit union financing options and get help from a team that keeps the process clear and practical.

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Used cars and trucks

Browse locally sourced vehicles that are inspected, reconditioned, and selected with quality in mind.

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Customer-first experience

Work with knowledgeable staff who focus on honest guidance instead of high-pressure sales tactics.

Read our reviews >

Used cars and trucks for sale in Longmont, CO at Red’s Auto & Truck

Red’s Auto & Truck offers a carefully selected inventory of used cars and trucks for drivers in Longmont and across Colorado. Since 1974, our dealership has focused on making the buying process straightforward, with low upfront prices, no dealer fees, and a no-pressure approach that helps customers shop with confidence.

Every vehicle is handpicked with quality in mind, including locally sourced options that are inspected, safety checked, reconditioned, and sold with clean titles. Whether you are looking for a dependable car, a capable truck, or the right vehicle for your daily routine, our team is here to help you find a smart fit without the typical big-dealer games.

Used car financing in Longmont, CO with credit union financing support

Financing your next used car or truck should feel clear, practical, and easy to understand. At Red’s Auto & Truck, customers can explore credit union financing options with help from a knowledgeable team that is ready to guide them through the next steps.

From browsing inventory to discussing your purchase, our goal is to keep the process honest and simple from start to finish. If you are ready to move forward, you can start online or contact our Longmont dealership to talk through your options and get closer to your next vehicle.

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