Car buying in Denver: a local guide to buying a used car in Colorado
Quick answer
To buy a used car in Denver, set an all-in budget that includes Colorado sales tax (9.15% for a City and County of Denver address) and registration. Get pre-approved, compare vehicles on market-based prices, and check the history report and emissions status. Then let the dealer file your title and registration within Colorado's 60-day window.
Denver is a big, competitive used car market, and Colorado has a few rules that surprise first-time buyers and newcomers. This guide walks through the process step by step, from budget to plates, with links to the official sources. It's written by the team at Emich Automotive Group, a family-owned dealer group with stores in Denver, Lakewood and Boulder.
1. Set an all-in budget, not just a sticker price
The price on the windshield is only part of the cost. Plan for these as well:
- Sales tax. Colorado's state rate is 2.9%, and local taxes stack on top based on where you live. For a City and County of Denver address, the total is 9.15%: 2.9% state, 5.15% Denver, 1% RTD and 0.1% Scientific and Cultural Facilities District. Tax is collected when the vehicle is titled.
- Registration and Specific Ownership Tax. Colorado charges Specific Ownership Tax every year at registration. It's based on 85% of the vehicle's original MSRP and drops as the car ages: 2.1% in year one, then 1.5%, 1.2%, 0.9%, 0.45% for years five through nine, and a flat $3 from year ten. Older used cars cost much less to register.
- Insurance. You need Colorado insurance before you can drive off the lot or get a temporary tag. Get a quote on the exact vehicle before you buy.
- Dealer fees. Ask for the out-the-door price in writing. That's the vehicle price with every fee and tax included.
2. Get pre-approved before you shop
A pre-approval tells you what monthly payment and rate you qualify for, so you shop within a real budget. You can get prequalified online without affecting the vehicle you choose. Estimate payments with a payment calculator, and remember to add tax and registration to the amount you finance or pay.
3. Pick a vehicle that fits Colorado driving
Think about how you'll actually drive. For I-70 ski weekends, mountain passes or a steep driveway, AWD or 4WD with good tires helps. If you mostly commute in the metro, a front-wheel-drive car or hybrid with winter tires can save money. Check that the tires have enough tread for winter, because tires are a common hidden cost on used cars.
4. Compare prices the smart way
Used car prices move with the market, so compare vehicles that match on year, trim, mileage and condition, not just make and model. A low sticker price on a car with high miles or worn tires often isn't the better deal.
If you'd rather not negotiate, look for no-haggle pricing. At Emich, every Emich Approved used vehicle has one market-based price that's the same online and in the store. Our sales consultants are non-commissioned and aren't paid based on which car you choose or how much you pay, so their goal is simply to help you find the right car. See how Emich One Price works.
5. Check the car's history and condition
- Read the vehicle history report for accidents, title brands, number of owners and service records.
- Ask what reconditioning was done, such as brakes, tires, fluids and repairs, and get it in writing.
- Test drive on the highway and on a hill. Listen for noises and check that every feature works.
- For a private sale, pay for an independent pre-purchase inspection.
6. Understand Colorado emissions testing
Emissions testing applies in all or part of Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas, Jefferson, Larimer and Weld counties. Gas vehicles are exempt for their first seven model years. After that, most need a test every two years. When you buy from a Colorado dealer in the program area, the dealer must provide a passing emissions test or a test voucher at the time of sale. Ask to see it.
7. Get a fair value for your trade-in
Know your current car's value before you visit. Payoff amount, mileage, condition and local demand all matter. You can start a trade-in estimate online, or sell your car to Emich even if you don't buy from us.
8. Title, registration and temporary tags
Colorado requires you to register a vehicle within 60 days of purchase. Late fees are $25 a month, up to $100. When you buy from a dealer, the dealer sends the title paperwork to your county and issues a temporary permit that's valid for up to 60 days. You'll need proof of Colorado insurance and a secure ID.
9. Know your rights before you sign
- Colorado has no cooling-off period and no automatic right to cancel a vehicle purchase. Once you sign, the deal is done.
- Colorado's Lemon Law covers new vehicles only, not used ones. Inspection, the history report and any warranty are your protection on a used car.
- Read every document, confirm the out-the-door price and keep copies.
Tips for first-time car buyers in Denver
- Keep the total monthly cost, including payment, insurance, fuel and registration, to a level you're comfortable with.
- A larger down payment or a co-signer can lower your rate.
- Bring your license, proof of insurance, proof of income and residence, and your trade's title or payoff information.
- Take your time. A good dealership won't rush you.
Frequently asked questions
What is the sales tax on a used car in Denver?
For a City and County of Denver address, the total is 9.15%: 2.9% state, 5.15% Denver, 1% RTD and 0.1% SCFD. If you live elsewhere in Colorado, your own city, county and district rates apply.
How long do I have to register a car in Colorado after buying it?
You have 60 days from the purchase date. When you buy from a dealer, the dealer typically handles the title paperwork and issues a temporary tag valid for up to 60 days.
Does a used car need an emissions test in Denver?
Gas vehicles more than seven model years old generally need a test every two years in the Denver metro program area. Colorado dealers must provide a passing test or a test voucher when they sell a vehicle that needs one.
Can I return a used car in Colorado?
Not automatically. Colorado has no cooling-off period for vehicle purchases, and the Lemon Law covers new vehicles only. Check the car carefully and ask about any return or exchange policy before you sign.
Can I buy a used car in Denver without negotiating?
Yes. At Emich, every Emich Approved used vehicle has one market-based price that's the same online and in the store, so there's nothing to negotiate. Learn about Emich One Price.
Ready to shop?
Browse used cars, trucks and SUVs from all four Emich stores in Denver, Lakewood and Boulder.
Sources
- Colorado Department of Revenue: Motor vehicle sales tax
- Colorado DMV: Registration and taxes and fees
- Colorado DMV: Dealer-issued temporary permits
- CDPHE: Emissions inspections and Colorado DMV: Emissions
- Colorado Attorney General: Buying a used car
- Colorado Auto Industry Division: Consumer information
Tax rates and fees are current as of September 2026 and can change. Confirm your exact rate with your county motor vehicle office.










