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Audi A6 vs. Audi S4

When we compare the Audi A6 to the Audi S4, 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, interior volume and overall quality score. The Audi S4 has the advantage in the areas of new vehicle base pricing and base engine power. Based on this comparison of the Audi A6 versus the Audi S4, the Audi A6 is a better car than the Audi S4.

Audi A6 versus Audi S4 Pricing

A one- to five-year-old used Audi A6 ranges from $40,723 to $60,433 while a used Audi S4 from the same model year range is priced between $50,289 to $62,097. For a new model, the Audi A6's price is between $57,745 and $73,934, with the Audi S4 priced between $55,509 and $68,604.

Audi A6 versus Audi S4 Quality Rating

The iSeeCars Overall Quality rating for the Audi A6 is 8.4 out of 10 while the Audi S4's quality rating is 8.3 out of 10. This results in the Audi A6 being ranked 5 out of 29 Best Luxury Midsize Cars and the Audi S4 being ranked 11 out of 38 Best Luxury Small Cars.

Audi A6 versus Audi S4 Engine Power and Fuel Efficiency

For engine performance, the Audi A6’s base engine makes 261 horsepower, and the Audi S4 base engine makes 349 horsepower. The A6 is rated to deliver an average of 27 miles per gallon, with a highway range of 598 miles. The S4 is rated to deliver an average of 24 miles per gallon, with a highway range of 459 miles. Both models use premium unleaded.

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Pricing

New Asking Price:

$57,745 - $73,934

Used Asking Price:

$40,723 - $60,433

5-Year Depreciation (lower is better):

58.2%

Pricing

New Asking Price:

$55,509 - $68,604

Used Asking Price:

$50,289 - $62,097

5-Year Depreciation (lower is better):

48.4%

iSeeCars Scores & Rankings

Overall Score:

8.4 / 10

Reliability:

8.6 / 10

Retained Value:

6.6 / 10

Safety:

10.0 / 10

iSeeCars Scores & Rankings

Overall Score:

8.3 / 10

Reliability:

8.5 / 10

Retained Value:

8.2 / 10

Safety:

Not available

iSeeCars Rankings

5 / 29
5 / 29

iSeeCars Rankings

6 / 38
11 / 38

Summary Review

Not yet available

Summary Review

Not yet available

Pros and Cons

Not yet available

Pros and Cons

Not yet available

Available Body Styles

Sedan

Available Body Styles

Sedan

Available Drivetrain Options

Gasoline

Available Drivetrain Options

Gasoline

Trim Levels

3.0T quattro Prestige, 2.0T quattro Premium, 3.0T quattro Premium, 3.0T quattro Premium Plus, 2.0T quattro Premium Plus

Trim Levels

3.0T quattro Premium, 3.0T quattro Prestige, 3.0T quattro Premium Plus

Warranty Information

Warranty, Bumper-to-Bumper:

4 years / 50000 miles

Warranty, Powertrain

4 years / 50000 miles

Warranty, Roadside Assistance:

4 years

Warranty Information

Warranty, Bumper-to-Bumper:

4 years / 50000 miles

Warranty, Powertrain

4 years / 50000 miles

Warranty, Roadside Assistance:

4 years

Safety Ratings

NHTSA Safety Rating (last 5 year average):

5 out of 5 Stars

IIHS Safety Rating:

TOP SAFETY PICK +

Safety Ratings

NHTSA Safety Rating (last 5 year average):

Not yet available

IIHS Safety Rating:

Not yet available

Base Drivetrain Specifications

Horsepower:

261 hp @ 5000 rpm

Torque:

273 foot-lbs @ 1600 rpm

Power-to-Weight Ratio (higher is better):

0.064 hp per pound

Base Drivetrain Specifications

Horsepower:

349 hp @ 5400 rpm

Torque:

369 foot-lbs @ 1370 rpm

Power-to-Weight Ratio (higher is better):

0.091 hp per pound

Engine Specifications

Engine Size:

2 liters

Engine Configuration:

Inline

Number of Cylinders:

4

Transmission:

Automatic

Standard/Optional Drivetrain Type:

AWD

EPA Fuel Economy (City/Highway/Combined MPG):

24 / 31 / 27

Range (city/hwy):

463 / 598 miles

Recommended Fuel Type:

Premium Unleaded

Engine Specifications

Engine Size:

3 liters

Engine Configuration:

V

Number of Cylinders:

6

Transmission:

Automatic

Standard/Optional Drivetrain Type:

AWD

EPA Fuel Economy (City/Highway/Combined MPG):

21 / 30 / 24

Range (city/hwy):

321 / 459 miles

Recommended Fuel Type:

Premium Unleaded

Standard/Optional Features

Apple CarPlay:

Standard

Android Auto:

Standard

Wireless Smartphone Charging:

Available

Keyless Entry:

Standard

Keyless Ignition:

Standard

Adaptive Cruise Control:

Available

Heated Seats:

Standard

Cooled/Ventilated Seats:

Available

Leather Upholstery:

Standard

Navigation System:

Standard

Sunroof/Moonroof:

Standard

Heated Steering Wheel:

Available

Standard/Optional Features

Apple CarPlay:

Standard

Android Auto:

Standard

Wireless Smartphone Charging:

Available

Keyless Entry:

Standard

Keyless Ignition:

Standard

Adaptive Cruise Control:

Available

Heated Seats:

Standard

Cooled/Ventilated Seats:

Available

Leather Upholstery:

Standard

Navigation System:

Standard

Sunroof/Moonroof:

Standard

Heated Steering Wheel:

Available

Safety Equipment

Forward Collision Warning:

Standard

Pedestrian Detection:

Standard

Lane Departure Warning:

Standard

Lane Keeping Assist:

Available

Blind Spot Monitoring:

Available

Rear Cross-Traffic Alert:

Available

360-Degree Camera:

Available

Rear Seat Reminder:

N/A

Driver Attention Monitoring:

N/A

Safety Equipment

Forward Collision Warning:

Standard

Pedestrian Detection:

Standard

Lane Departure Warning:

Standard

Lane Keeping Assist:

Available

Blind Spot Monitoring:

Available

Rear Cross-Traffic Alert:

Available

360-Degree Camera:

Available

Rear Seat Reminder:

N/A

Driver Attention Monitoring:

Available

Interior Dimensions

Front Head Room:

38 inches

Front Leg Room:

41.3 inches

Front Shoulder Room:

57.8 inches

Rear Head Room:

38.1 inches

Rear Leg Room:

37.4 inches

Rear Shoulder Room:

56.5 inches

Cargo Space:

13.7 cubic feet

Overall Interior Volume:

99.0 cubic feet

Interior Dimensions

Front Head Room:

37.3 inches

Front Leg Room:

41.3 inches

Front Shoulder Room:

55.9 inches

Rear Head Room:

37.4 inches

Rear Leg Room:

35.7 inches

Rear Shoulder Room:

54.5 inches

Cargo Space:

12 cubic feet

Overall Interior Volume:

92.0 cubic feet

Exterior Dimensions

Curb Weight:

4101 lbs

Width:

83.1 inches

Height:

57.4 inches

Length:

194.4 inches

Wheelbase:

115.1 inches

Ground Clearance:

Not yet available

Exterior Dimensions

Curb Weight:

3847 lbs

Width:

79.6 inches

Height:

56.2 inches

Length:

187.5 inches

Wheelbase:

111 inches

Ground Clearance:

6.5 inches

Standard Wheel/Tire Information

Wheel Size:

19.0 x 8.5 inches

Wheel Type:

painted alloy

Tire Size:

245/45R19

Standard Wheel/Tire Information

Wheel Size:

19.0 x 8.5 inches

Wheel Type:

painted alloy

Tire Size:

255/35R19