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For enhanced safety, the front and rear seat shoulder belts of the Audi A6 have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision. The Infiniti Q50 doesn’t offer pretensioners for the rear seat belts.
The A6 has a standard Secondary Collision Brake Assist, which automatically applies the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The Q50 doesn’t offer a post collision braking system: in the event of a collision that triggers the airbags, more collisions are possible without the protection of airbags that may have already deployed.
To provide maximum traction and stability on all roads, All-Wheel Drive is standard on the A6. But it costs extra on the Q50.
A passive infrared night vision system optional on the A6 Prestige helps the driver to more easily detect people, animals or other objects in front of the vehicle at night. Using an infrared camera to detect heat, the system then displays the image on a monitor in the dashboard. The Q50 doesn’t offer a night vision system.
Both the A6 and the Q50 have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, rearview cameras, available blind spot warning systems, around view monitors and rear cross-path warning.
The A6’s corrosion warranty is 5 years longer than the Q50’s (12 vs. 7 years).
There are over 42 percent more Audi dealers than there are Infiniti dealers, which makes it easier should you ever need service under the A6’s warranty.
The A6’s 3.0 turbo V6 hybrid produces 127 more horsepower (335 vs. 208) and 111 lbs.-ft. more torque (369 vs. 258) than the Q50 2.0t’s standard 2.0 turbo 4 cyl. The A6’s 3.0 turbo V6 hybrid produces 35 more horsepower (335 vs. 300) and 74 lbs.-ft. more torque (369 vs. 295) than the Q50 3.0t’s standard 3.0 turbo V6. The A6’s 3.0 turbo V6 hybrid produces 19 lbs.-ft. more torque (369 vs. 350) than the Q50 Red Sport 400’s standard 3.0 turbo V6.
On the EPA test cycle the A6 3.0T gets better fuel mileage than the Q50 2.0t AWD (22 city/29 hwy vs. 22 city/28 hwy). The A6 3.0T gets better fuel mileage than the Q50 3.0t AWD (22 city/29 hwy vs. 19 city/27 hwy).
Regenerative brakes improve the A6’s fuel efficiency by converting inertia back into energy instead of wasting it. The Q50 doesn’t offer a regenerative braking system.
To lower fuel costs and make buying fuel easier, the Audi A6 uses regular unleaded gasoline (premium recommended for maximum performance). The Q50 requires premium, which can cost 20 to 55 cents more per gallon.
The A6 offers a standard sequential manual gearbox (SMG). With no clutch pedal to worry about and a fully automatic mode, an SMG is much more efficient than a conventional automatic but just as easy to drive. The Q50 doesn’t offer an SMG or a conventional manual transmission.
For better stopping power the A6’s standard brake rotors are larger than those on the Q50:
For better traction, the A6 has larger standard tires than the Q50 (245/45R19 vs. 225/55R17). The A6’s optional tires are larger than the largest tires available on the Q50 (255/40R20 vs. 245/40R19).
The A6’s standard tires provide better handling because they have a lower 45 series profile (height to width ratio) that provides a stiffer sidewall than the Q50’s standard 55 series tires. The A6 Prestige’s optional tires have a lower 35 series profile than the Q50 Red Sport 400’s 40 series front tires.
For better ride, handling and brake cooling the A6 has standard 19-inch wheels. Smaller 17-inch wheels are standard on the Q50. The A6 Prestige’s optional 21-inch wheels are larger than the 19-inch wheels on the Q50 Sport/Red Sport 400 AWD.
For a smoother ride and more stable handling, the A6’s wheelbase is 2.9 inches longer than on the Q50 (115.1 inches vs. 112.2 inches).
For better handling and stability, the track (width between the wheels) on the A6 is 4.7 inches wider in the front and 2.3 inches wider in the rear than the average track on the Q50.
For better maneuverability, the A6’s turning circle is .3 feet tighter than the Q50’s (36.4 feet vs. 36.7 feet). The A6’s turning circle is 1 foot tighter than the Q50 AWD’s (36.4 feet vs. 37.4 feet).
The A6 has 1.1 inches more front shoulder room, .6 inches more rear headroom, 2.3 inches more rear legroom and .4 inches more rear shoulder room than the Q50.
The A6’s standard rear seats fold to accommodate long and bulky cargo. The Q50 Pure doesn’t offer folding rear seats.
To make loading and unloading groceries and cargo easier, especially for short adults, the A6 Prestige has a standard power trunk, which opens and closes automatically by pressing a button, or optionally by just kicking your foot under the back bumper, completely leaving your hands free. The Q50 doesn’t offer a power trunk.
The A6’s standard easy entry system raises the steering wheel, making it easier for the driver to get in and out. An easy entry system costs extra on the Q50, and is not available on all models.
The A6 Prestige has a standard heads-up display that projects speed and navigation instruction readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The Q50 doesn’t offer a heads-up display.
In poor weather, headlights can lose their effectiveness as grime builds up on their lenses. This can reduce visibility without the driver realizing. The A6 offers available headlight washers to keep headlight output high. The Q50 doesn’t offer headlight washers.
A power rear sunshade is standard in the A6 to help block heat and glare for the rear passengers. The Q50 doesn’t offer a rear sunshade.
The A6 has standard heated front seats. Heated front seats cost extra on the Q50, and aren’t available on the Q50 2.0t. The A6 also offers optional heated rear seats to keep those passengers extremely comfortable in the winter. Heated rear seats aren’t available in the Q50.
Optional air-conditioned seats in the A6 keep the driver and front passenger comfortable and take the sting out of hot seats in summer. The Q50 doesn’t offer air-conditioned seats.
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