Used Audi A6 in Niwot, CO

2.5 million cars to choose from.

Search Used Cars





Audi A6
  • 2013 Audi A6 3.0T quattro Premium Plus in Boulder, CO 80301

    Featured Car
    $31,500
    Mileage: 45,181
    Location: Boulder, CO 80301
    Description: Used 2013 Audi A6 3.0T quattro Premium Plus - $31,500, 45,181 miles Exterior Color: quartz gray metallic Sedan 4 Dr. Fuel: Gas 4 Doors
  • 2013 Audi A6 3.0T quattro Premium Plus in Boulder, CO 80301

    Featured Car
    $34,500
    Mileage: 29,168
    Location: Boulder, CO 80301
    Description: Used 2013 Audi A6 3.0T quattro Premium Plus - $34,500, 29,168 miles Exterior Color: quartz gray metallic Sedan 4 Dr. Fuel: Gas 4 Doors
  • 2012 Audi A6 3.0T quattro Premium Plus in Boulder, CO 80301

    $25,500
    Mileage: 56,808
    Location: Boulder, CO 80301
    Description: Used 2012 Audi A6 3.0T quattro Premium Plus - $25,500, 56,808 miles Exterior Color: glacier white metallic Sedan 3.0L V6 24V GDI DOHC Supercharge Fuel: Gasoli 4 Doors
  • 2016 Audi A6 2.0T quattro Premium Plus in Boulder, CO 80301

    $51,000
    Mileage: 5,087
    Location: Boulder, CO 80301
    Description: Used 2016 Audi A6 2.0T quattro Premium Plus - $51,000, 5,087 miles Exterior Color: tornado gray metallic Sedan 2.0L I4 16V GDI DOHC Turbo Fuel: Gasoli 4 Doors
  • 2016 Audi A6 3.0T quattro Premium Plus in Boulder, CO 80301

    $54,000
    Mileage: 5,364
    Location: Boulder, CO 80301
    Description: Used 2016 Audi A6 3.0T quattro Premium Plus - $54,000, 5,364 miles Exterior Color: tornado gray metallic Sedan 3.0L V6 24V GDI DOHC Supercharge Fuel: Gasoli 4 Doors
  • 2002 Audi A6 2.7T quattro in Longmont, CO 80501

    $6,400
    Mileage: 123,484
    Location: Longmont, CO 80501
    Description: Used 2002 Audi A6 2.7T quattro - $6,400, 123,484 miles Exterior Color: champagne Sedan 2.7L V6 30V MPFI DOHC Twin Turbo Fuel: Gasoli 4 Doors
  • 2000 Audi A6 2.8 in Longmont, CO 80501

    $3,999
    Mileage: 117,668
    Location: Longmont, CO 80501
    Description: Used 2000 Audi A6 2.8 - $3,999, 117,668 miles Exterior Color: tan Interior Color: tan Sedan V6 2.8L DOHC Automatic Transmission Fuel: Gasoline 6 Cylinders 4 Doors
  • 2004 Audi A6 2.7T S-Line quattro in Longmont, CO 80501

    $7,999
    Mileage: 137,346
    Location: Longmont, CO 80501
    Description: Used 2004 Audi A6 2.7T S-Line quattro - $7,999, 137,346 miles Exterior Color: gold Interior Color: tan Sedan V6 2.7L DOHC Automatic Transmission Fuel: Gasoline 6 Cylinders 4 Doors
  • 2005 Audi A6 4.2 quattro in Longmont, CO 80504

    $9,409
    Mileage: 107,768
    Location: Longmont, CO 80504
    Description: Used 2005 Audi A6 4.2 quattro - $9,409, 107,768 miles Exterior Color: blue Sedan 4.2L V8 40V MPFI DOHC Fuel: Gasoli 4 Doors
  • 2014 Audi A6 3.0T quattro Prestige in Broomfield, CO 80020

    $35,391
    Mileage: 31,590
    Location: Broomfield, CO 80020
    Description: Used 2014 Audi A6 3.0T quattro Prestige - $35,391, 31,590 miles Exterior Color: black Sedan 3.0L V6 24V GDI DOHC Supercharge Fuel: Gasoli 4 Doors
  • 2015 Audi A6 2.0T quattro Premium in Denver, CO 80233

    $36,749
    Mileage: 21,953
    Location: Denver, CO 80233
    Description: Used 2015 Audi A6 2.0T quattro Premium - $36,749, 21,953 miles Exterior Color: quartz gray metallic Sedan 2.0L I4 16V GDI DOHC Turbo Fuel: Gasoli 4 Doors
  • 2013 Audi A6 2.0T quattro Premium Plus in Denver, CO 80233

    $30,499
    Mileage: 37,695
    Location: Denver, CO 80233
    Description: Used 2013 Audi A6 2.0T quattro Premium Plus - $30,499, 37,695 miles Exterior Color: quartz gray metallic Sedan 2.0L I4 16V GDI DOHC Turbo Fuel: Gasoli 4 Doors
  • 2010 Audi A6 3.0T quattro Prestige in Commerce City, CO 80022

    $18,750
    Mileage: 75,226
    Location: Commerce City, CO 80022
    Description: Used 2010 Audi A6 3.0T quattro Prestige - $18,750, 75,226 miles Exterior Color: gray Sedan 3.0L V6 24V GDI DOHC Supercharge Fuel: GASOLI 4 Doors
  • 2004 Audi A6 2.7T quattro in Commerce City, CO 80022

    $8,995
    Mileage: 77,040
    Location: Commerce City, CO 80022
    Description: Used 2004 Audi A6 2.7T quattro - $8,995, 77,040 miles Exterior Color: burgundy Sedan 2.7L V6 30V MPFI DOHC Twin Turbo Fuel: GASOLI 4 Doors
  • 2010 Audi A6 3.0T quattro Prestige in Denver, CO 80215

    $24,991
    Mileage: 42,782
    Location: Denver, CO 80215
    Description: Used 2010 Audi A6 3.0T quattro Prestige - $24,991, 42,782 miles Exterior Color: blue Sedan 3.0L V6 24V GDI DOHC Supercharge Fuel: Gasoli 4 Doors