Welcome to Sill-TerHar Mazda

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We're offering a great after purchase programs for pre-owned buyers in the market.  

Our hope is that you leave Sill-TerHar knowing that we stand behind the cars we sell.  Here's what we have to offer:

  •  A 90-day/3,000 mile limited powertrain warranty that includes tow truck reimbursement, and a rental car allowance for when things aren't going as well as they should.  This is for pre-owned vehicles with less than 100,000 miles.  See dealer for full details.

  • A 5-day exchange privilege.  This simply means that if you don't like your car for any reason you can bring it back to us in the first 5 days for a different car.  It doesn't matter why you want to swap, if the car is too big, or too small, too red, or too blue, just let us know and we'll find you the right car.

  • A thorough multi-point inspection.  We make sure that all of our cars are in full working order and the best condition we can put them in before we list them for sale.  We check under the hood, under the car, and take it for a road test to be sure that you can enjoy your purchase for as long as possible.

There are a number of details in this program that we can best go over in person.  Please ask your salesman for the complete details of our program.  Unfortunately this does not apply to exotic cars.  


Thanks to Michael for this great shot of our new badge on the back of his new car!

Welcome to Sill-TerHar Mazda

Sill-TerHar Mazda serving Broomfield, Boulder, Denver, Lakewood, Longmont and Aurora- Where first-class customer service comes standard with every car

We make the dream of owning a new Mazda come true with an award-winning lineup of new and used cars, auto-financing that's easy to wrap your head around, and an expert team of auto repair specialists dedicated to using only Mazda parts.

What new 2018 & 2019 Mazda models do you have to choose from at Sill-TerHar Mazda? The answer is many, which sounds vague, we know. But it's true. What we can tell you is that among the most popular are the Mazda3Mazda CX-3Mazda CX-5Mazda CX-9, Mazda5 and Mazda6. That said; we recommend you keep an open mind. For, your criteria might be different from Jane's and Joe's, down the street. And, remember while our online inventory is always evolving, it's also always up to date. Call us today at (303) 469-1801 to schedule a test drive.

Looking to spend less on a car and apply the savings somewhere else? Not a bad idea if you ask us. We offer a wide selection of quality used cars that drivers in the Broomfield, Denver, Lakewood, Longmont and Aurora can enjoy. So take that extra green and use it for a down payment, vacation, whatever suits your fancy. You'll still enjoy like-new quality and performance. Used is really just in the name. If you need any assistance finding a new or used Mazda in Broomfield then please complete our CarFinder form and let us find the car of your dreams. We are the premier Mazda dealer proudly serving Denver, Longmont, and Lakewood.

Greater Denver, Lakewood, Longmont and Aurora Car Loan and Lease Assistance

While our assortment of new and used vehicles may be overwhelming (and we mean that in good way), the financing part is easy as pie at Sill-TerHar Mazda. This means the fun of choosing your new set of Mazda wheels isn't diluted by the stress and/or headache of figuring out terms and conditions. Not only will we do the negotiating for you and get a car loan or lease at optimum rates, we will explain everything in everyday lingo so that there is no confusion as to what you're signing on for and you realize just how good a deal we got you.

Planning to set up shop and take care of an oil change or other car repair this weekend? Sill-TerHar Mazda has all of the certified Mazda car parts you need to do it yourself, including the oil filter. If you need to change the car battery, we can hook you up with that too - any and all maintenance and auto repair parts you need. And, if you don't have time or urge to do it yourself, you can always take it into the Sill-TerHar Mazda service department, providing drivers in Denver, Lakewood, Longmont and Aurora with everything from oil repairs to battery repairs, auto glass repairs to transmission or electrical system repairs.

Sill-TerHar Mazda encourages you to browse our site to learn more about our new and used Mazda vehicles, parts and service. If you're ready to take a test drive, simply stop in and see us in person at 1480 West 1st Avenue Broomfield, Colorado during regular business hours. We're happy to get you behind the wheel.

  1. Sill-TerHar Mazda

    1480 West 1st Avenue
    Broomfield, CO 80020

    • Sales: 303.469.1801
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Sill-TerHar Mazda

1480 West 1st Avenue
Directions Broomfield, CO 80020

  • Sales: 303.469.1801
  • Service: 303.439.3017
  • Parts: 303.439.3016


  • Monday 8:30AM - 8:30PM
  • Tuesday 8:30AM - 8:30PM
  • Wednesday 8:30AM - 8:30PM
  • Thursday 8:30AM - 8:30PM
  • Friday 8:30AM - 8:30PM
  • Saturday 8:30AM - 6:00PM
  • Sunday Closed