Certified Benz & Beemer Compares 2015 Infiniti Q50 VS 2015 Audi A6 Near Phoenix, AZ

Responsive image

2015 Infiniti Q50

Responsive image

2015 Audi A6

Safety Comparison

The Insurance Institute for Highway Safety tests front crash prevention systems. With a score of 6 points, IIHS rates the Forward Emergency Braking optional in the Q50 as “Superior.” The A6 scores only 3 points, and is rated only “Basic.”

Over 200 people are killed each year when backed over by motor vehicles. The Q50 Premium/Sport offers optional Back-up Collision Intervention which use rear sensors to monitor and automatically apply the brakes to prevent a rear collision. The A6 doesn’t offer backup collision prevention brakes.

The Q50 offers optional Infiniti Connection, which uses a global positioning satellite (GPS) receiver and a cellular system to get turn-by-turn driving directions, remotely unlock your doors if you lock your keys in, help track down your vehicle if it’s stolen or send emergency personnel to the scene if any airbags deploy. The A6 doesn’t offer a GPS response system, only a navigation computer with no live response for emergencies, so if you’re involved in an accident and you’re incapacitated help may not come as quickly.

Both the Q50 and the A6 have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front seatbelt pretensioners, height-adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding and available all wheel drive.

The National Highway Traffic Safety Administration does side impact tests on new vehicles. In this test, which crashes the vehicle into a flat barrier at 38.5 MPH and into a post at 20 MPH, results indicate that the Infiniti Q50 is safer than the Audi A6:



Front Seat


5 Stars

5 Stars




Chest Movement

.9 inches

1.1 inches

Rear Seat


5 Stars

5 Stars




Spine Acceleration

46 G’s

52 G’s

Hip Force

415 lbs.

710 lbs.

Into Pole


5 Stars

5 Stars




Spine Acceleration

36 G’s

51 G’s

Hip Force

634 lbs.

700 lbs.

New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.

For its top level performance in the IIHS moderate overlap frontal impact, side impact, rear impact, roof-crush crash tests, an “Acceptable” rating in the newer small overlap frontal crash test, and with its optional front crash prevention system, the Insurance Institute for Highway Safety grants the Q50 its highest rating: “Top Pick Plus” for 2014, a rating granted to only 49 vehicles tested by the IIHS. The A6 has not been fully tested, yet.

Warranty Comparison

The Q50 comes with a full 4 year/60,000 mile basic warranty, which covers the entire car and includes 24 hour roadside assistance. The A6’s 4 year/50,000 mile basic warranty expires 10,000 miles sooner.

Infiniti’s powertrain warranty covers the Q50 2 years and 20,000 miles longer than Audi covers the A6. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 6 years or 70,000 miles. Coverage on the A6 ends after only 4 years or 50,000 miles.

Reliability Comparison

J.D. Power and Associates’ 2014 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Infiniti vehicles are more reliable than Audi vehicles. J.D. Power ranks Infiniti 10th in reliability. With 23 more problems per 100 vehicles, Audi is ranked 19th.

Engine Comparison

The Q50’s standard 3.7 DOHC V6 produces 108 more horsepower (328 vs. 220) and 11 lbs.-ft. more torque (269 vs. 258) than the A6 2.0T’s standard 2.0 turbo 4 cyl. The Q50’s 3.7 DOHC V6 produces 18 more horsepower (328 vs. 310) than the A6 3.0T’s standard 3.0 supercharged V6. The Q50 Hybrid’s standard 3.5 DOHC V6 hybrid produces 50 more horsepower (360 vs. 310) than the A6 3.0T’s standard 3.0 supercharged V6.

As tested in Car and Driver the Infiniti Q50 V6 is faster than the A6 3.0T:



Zero to 60 MPH

4.9 sec

5.6 sec

Zero to 100 MPH

12.3 sec

13.7 sec

5 to 60 MPH Rolling Start

5.3 sec

6 sec

Quarter Mile

13.5 sec

14 sec

Speed in 1/4 Mile

104 MPH

101 MPH

Top Speed

144 MPH

129 MPH

Fuel Economy and Range Comparison

On the EPA test cycle the Q50 Hybrid AWD gets better fuel mileage than the A6 3.0 TDI (28 city/35 hwy vs. 24 city/38 hwy).

On the EPA test cycle the Q50 gets better fuel mileage than the A6 3.0T:





20 city/30 hwy


Sport V6/Auto

20 city/29 hwy




19 city/27 hwy

18 city/27 hwy

Regenerative brakes improve the Q50 Hybrid’s fuel efficiency by converting inertia back into energy instead of wasting it. The A6 doesn’t offer a regenerative braking system.

Brakes and Stopping Comparison

The Q50’s standard front and rear disc brakes are vented to help dissipate heat for shorter stops with less fading. The rear discs standard on the A6 2.0T/TDI are solid, not vented.

The Q50 stops much shorter than the A6:



70 to 0 MPH

156 feet

171 feet

Car and Driver

60 to 0 MPH

126 feet

132 feet

Consumer Reports

60 to 0 MPH (Wet)

135 feet

138 feet

Consumer Reports

Tires and Wheels Comparison

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires available on the Q50 can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The A6 doesn’t offer run-flat tires.

Suspension and Handling Comparison

The Q50’s optional drift compensation steering can automatically compensate for road conditions which would cause the vehicle to drift from side to side, helping the driver to keep the vehicle straight more easily. The A6 doesn’t offer drift compensation steering.

The 3.7 Q50S handles at .95 G’s, while the A6 3.0T Quattro pulls only .88 G’s of cornering force in a Car and Driver skidpad test.

For better maneuverability, the Q50’s turning circle is 2.3 feet tighter than the A6’s (36.7 feet vs. 39 feet). The Q50 AWD’s turning circle is 1.6 feet tighter than the A6’s (37.4 feet vs. 39 feet).

Chassis Comparison

The Q50 is 5.6 inches shorter than the A6, making the Q50 easier to handle, maneuver and park in tight spaces.

The Q50 offers available computer-generated active noise cancellation to help remove annoying noise and vibration from the passenger compartment, especially at low frequencies. The A6 doesn’t offer active noise cancellation.

Passenger Space Comparison

The Q50 has 4.7 cubic feet more passenger volume than the A6 (101.9 vs. 97.2).

The Q50 has 3 inches more front headroom and 3.2 inches more front legroom than the A6.

Ergonomics Comparison

If the windows are left down on the Q50 the driver can raise them all using the key in the outside lock cylinder. On a hot day the driver can lower the windows from outside the vehicle using the key in the outside lock cylinder or the keyless remote. The driver of the A6 can’t use the remote to operate the windows.

The Infiniti Intelligent Key standard on the Q50 allows you to unlock the driver’s door, trunk and start the engine all without removing a key from pocket or purse. This eliminates searching for keys before loading groceries, getting in the vehicle in bad weather or making a hurried start to your trip. The Audi A6’s available Audi Advanced Key doesn’t unlock the trunk.

Consumer Reports rated the Q50’s headlight performance “Good,” a higher rating than the A6’s headlights, which were rated “Fair.”

While driving with high beams on, sensitive light sensors available for the Q50 Premium/Sport detect other vehicles which could be blinded and automatically switch to low beams. The A6 doesn’t offer automatic dimming high beams.

When the Q50 with available tilt-down mirrors is put in reverse, both rearview mirrors tilt from their original position. This gives the driver a better view of the curb during parallel parking maneuvers. Shifting out of reverse puts the mirrors into their original positions. The A6’s mirrors don’t automatically adjust for backing.

Standard InTouch Apps for the Q50 allows the driver and passengers access to select programs on their smartphones, including playing internet radio stations, searching the internet and other connected activities without taking their eyes off the road or their hands from the wheel. The A6 doesn’t offer factory integrated smartphone program access.

Economic Advantages Comparison

Insurance will cost less for the Q50 owner. The Complete Car Cost Guide estimates that insurance for the Q50 will cost $545 less than the A6 over a five-year period.

The Q50 will cost the buyer less in the long run because of its superior resale value. The Intellichoice estimates that the Q50 will retain 49.48% to 53.59% of its original price after five years, while the A6 only retains 45.65% to 49.47%.

Intellichoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the Infiniti Q50 will be $5920 to $11896 less than for the Audi A6.

Recommendations Comparison

Both the Infiniti Q50 and Audi A6 won an award in Kiplinger’s 2014 car issue.

The Infiniti Q50 outsold the Audi A6/S6 by 63% during the 2014 model year.

© 1991-2016 Advanta-STAR Automotive Research. All rights reserved. Who We Are
Click here to view the disclaimers, limitations and notices about EPA fuel mileage, crash tests, coprights, trademarks, and other issues.