Cadillac CT6 vs. Audi A6

iSeeCars' unbiased and data-driven comparison of the Cadillac CT6 and Audi A6 contrasts the two cars across a broad spectrum of vehicle specifications to determine which car is better. In addition to comparing pricing and specs, iSeeCars uses all the ratings, rankings, and insights from its comprehensive analyses of each vehicle model, including calculations of reliability, safety, depreciation, value retention, and the vehicle's projected lifetime recalls (based on analyzing over 25 billion data points). This in-depth evaluation is used to identify which vehicle represents a better overall choice for shoppers who are considering both the Cadillac CT6 and the Audi A6.

When comparing the Cadillac CT6's and the Audi A6's specifications and ratings, the Cadillac CT6 has the advantage in the areas of resale value, interior volume and base engine power. The Audi A6 has the advantage in the areas of typical lower range of pricing for one- to five-year-old used cars, and fuel efficiency, reliability and overall quality score. Based on this comparison of the Cadillac CT6's and the Audi A6's specifications and ratings, the Audi A6 is a better car than the Cadillac CT6.

Pricing: A used 2020 Cadillac CT6 ranges from $32,683 to $60,572 while a used 2020 Audi A6 is priced between $24,997 to $39,991.

Resale/Retained Value: Looking at the 5-year depreciation rate for both models, the Cadillac CT6 loses 57.2 percent of its value and the Audi A6 loses 57.2 percent of its value. This means the Cadillac CT6 retains 0 percentage points more of its value and has the advantage of higher resale value versus the Audi A6.

Quality Rating: The iSeeCars Overall Quality rating for the Cadillac CT6 is 6.4 out of 10 while the Audi A6's quality rating is 8.4 out of 10. This results in the Cadillac CT6 being ranked 18 out of 24 Best Luxury Large Cars and the Audi A6 being ranked 6 out of 29 Best Luxury Midsize Cars.

Reliability Rating: iSeeCars’ Reliability Rating for the Cadillac CT6 is 5.9 out of 10. For the Audi A6 the reliability rating is 8.3 out of 10. This gives the Audi A6 an advantage in reliability compared to the Cadillac CT6.

Engine Power and Fuel Efficiency Comparison: For engine performance, the Cadillac CT6’s base engine makes 335 horsepower, and the Audi A6 base engine makes 248 horsepower. The CT6 is rated to deliver an average of 21 miles per gallon, with a highway range of 518 miles. The A6 is rated to deliver an average of 27 miles per gallon, with a highway range of 618 miles. This gives the Audi A6 the fuel efficiency and maximum range advantage over the Cadillac CT6. The CT6 uses regular unleaded, and the A6 uses premium unleaded.

Passenger Space Comparison: The Cadillac CT6, a large car, has the advantage of offering more interior volume, reflected in more front head room, front shoulder room, front leg room, rear leg room, and cargo space. The Audi A6, a midsize car, has the advantage in the areas of rear head room and rear shoulder room.

Safety Ratings: The Audi A6 has an average safety rating of 5 out of 5 Stars based on NHTSA's crash test ratings.