Used Cars

3in1 Advanced Auto Sales & Services is the most honest auto dealership you will ever find. Integrity and ethics is how we have built our reputation.  Please come and see how we can help you find your next car or truck.

Want to Trade-In Or Sell Your Used Car?

Get a free appraisal in minutes without having to come to the dealership. Just call and I can come to you. Get cash or trade it in for any car on our lot.

SOLD – 2013 Chevrolet Cruze ECO

  • Engine:1.4L 4 cyl
  • Transmission: Auto
  • MPG Range:24/38
  • Exterior Color: Red
  • Interior Color: Black
  • Mileage: 47,881
  • Stock # : 001
  • VIN: 1G1PH5SB4D7116892

2007 BMW X3 – Coming Soon

  • Engine:3.0L
  • Transmission:
  • MPG Range:
  • Exterior Color: Grey
  • Interior Color: Grey Leather
  • Mileage: 123,300
  • Stock # : 002
  • VIN: WBXPC93467WF02467


100% Satisfication

“I have never met a clean mechanic and honest used car salesman before I met Leonard. He is one of a kind. I recommend 3in1 Advanced Auto Sales & Services any day of the week!”

“When I found out Leonard opened a dealership, I jumped at the opportunity for him to find me a new used car.”

“I bought a truck from Leonard and it was perfect for my son. He loved the truck and so was happy about all the add-ons. ”

“Great sense of humor and knows his cars and trucks. I recommend 3 in 1 Advanced Auto Sales and Services.”

Get In Touch

(303) 304-8958


431 84th Ave
Thornton, CO 80620


Open Hours

Mon:9am - 10am
Tue: 9am - 10am
Wed: 9am - 10am
Thur: 9am - 10am
Fri: 9am - 11am
Sat: 1pm - 8pm 
Sun: 9am - 9pm

Send A Message

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