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For enhanced safety, the front and rear seat shoulder belts of the Audi A7 have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision and force limiters to limit the pressure the belts will exert on the passengers. The Infiniti Q50 doesn’t offer pretensioners for the rear seat belts.
Both the A7 and Q50 have child safety locks to prevent children from opening the rear doors. The A7 has power child safety locks, allowing the driver to activate and deactivate them from the driver's seat and to know when they're engaged. The Q50’s child locks have to be individually engaged at each rear door with a manual switch. The driver can’t know the status of the locks without opening the doors and checking them.
The A7 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 A7. But it costs extra on the Q50.
A passive infrared night vision system optional on the A7 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 A7 and the Q50 have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, height adjustable front shoulder belts, 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.
For its top level performance in IIHS driver-side small overlap frontal, moderate overlap frontal, side impact, rear impact and roof-crush tests, its standard front crash prevention system, its “Good” rating in the new passenger-side small overlap crash test, and its available headlight’s “Acceptable” rating, the Insurance Institute for Highway Safety grants the A7 the rating of “Top Pick” for 2019, a rating granted to only 106 vehicles tested by the IIHS. The Q50 has not been fully tested, yet.
The A7’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 A7’s warranty.
J.D. Power and Associates rated the A7 third among midsize premium cars in their 2019 Initial Quality Study. The Q50 isn’t in the top three in its category.
J.D. Power and Associates’ 2019 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Audi vehicles are more reliable than Infiniti vehicles. J.D. Power ranks Audi 8th in reliability, above the industry average. With 4 more problems per 100 vehicles, Infiniti is ranked 11th.
The A7’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 A7’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.
As tested in Car and Driver the Audi A7 is faster than the Q50 Red Sport 400:
Zero to 60 MPH
On the EPA test cycle the A7 SMG gets better fuel mileage than the Q50 3.0t with its standard engine AWD (22 city/29 hwy vs. 19 city/27 hwy).
On the EPA test cycle the A7 Auto gets better fuel mileage than the Q50 3.0t AWD (22 city/29 hwy vs. 19 city/27 hwy).
Regenerative brakes improve the A7’s fuel efficiency by converting inertia back into energy instead of wasting it. The Q50 doesn’t offer a regenerative braking system.
The A7 has a standard cap-less fueling system. The fuel filler is automatically opened when the fuel nozzle is inserted and automatically closed when it’s removed. This eliminates the need to unscrew and replace the cap and it reduces fuel evaporation, which causes pollution. The Q50 doesn’t offer a cap-less fueling system.
In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Audi A7 higher (5 out of 10) than the Infiniti Q50 (3). This means the A7 produces up to 16.5 pounds less smog-producing pollutants than the Q50 every 15,000 miles.
The A7 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.
The A7’s launch control uses engine electronics to hold engine RPM’s precisely in order to provide the most stable and rapid acceleration possible, using all of the available traction. The Q50 doesn’t offer launch control.
For better stopping power the A7’s standard brake rotors are larger than those on the Q50:
The A7 stops shorter than the Q50:
70 to 0 MPH
Car and Driver
For better traction, the A7 has larger standard tires than the Q50 (245/45R19 vs. 225/55R17). The A7’s optional tires are larger than the largest tires available on the Q50 (255/40R20 vs. 245/40R19).
The A7’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 A7 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 A7 has standard 19-inch wheels. Smaller 17-inch wheels are standard on the Q50. The A7 Prestige’s optional 21-inch wheels are larger than the 19-inch wheels on the Q50 Sport/Red Sport 400 AWD.
The A7 has a standard space-saver spare tire so you can replace a flat tire and drive to have the flat repaired or replaced. A spare tire isn’t available on the Q50; it requires you to depend on its run-flat tires, which limits mileage and speed before they are repaired. If a run-flat is damaged beyond repair by a road hazard your vehicle will have to be towed.
For a smoother ride and more stable handling, the A7’s wheelbase is 3 inches longer than on the Q50 (115.2 inches vs. 112.2 inches).
For better handling and stability, the track (width between the wheels) on the A7 is 4.4 inches wider in the front and 2.9 inches wider in the rear than the average track on the Q50.
The A7’s front to rear weight distribution is more even (53.9% to 46.1%) than the Q50’s (55.8% to 44.2%). This gives the A7 more stable handling and braking.
The A7 Prestige handles at .93 G’s, while the Q50 Red Sport 400 pulls only .88 G’s of cornering force in a Car and Driver skidpad test.
For better maneuverability, the A7’s turning circle is .3 feet tighter than the Q50’s (36.4 feet vs. 36.7 feet). The A7’s turning circle is 1 foot tighter than the Q50 AWD’s (36.4 feet vs. 37.4 feet).
The A7 has .5 inches more front shoulder room and 1.9 inches more rear legroom than the Q50.
For enhanced passenger comfort on long trips the A7’s rear seats recline. The Q50’s rear seats don’t recline.
The A7’s standard rear seats fold to accommodate long and bulky cargo. The Q50 Pure doesn’t offer folding rear seats, only a ski pass-through.
To make loading and unloading groceries and cargo easier when your hands are full, the A7’s power liftgate can be opened or closed just by kicking your foot under the back bumper, leaving your hands completely free. The Q50 doesn’t offer a power or hands-free opening trunk.
The A7 has a 3500 lbs. towing capacity. The Q50 has no towing capacity.
The A7 Prestige has a standard heads-up display that projects speed and other key instrumentation 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.
The A7’s power parking brake sets with one touch and releases with one touch or automatically. The Q50’s parking brake has to released manually.
The power windows standard on both the A7 and the Q50 have locks to prevent small children from operating them. When the lock on the A7 is engaged the driver can still operate all of the windows, for instance to close one opened by a child. The Q50 prevents the driver from operating the other windows just as it does the other passengers.
In poor weather, headlights can lose their effectiveness as grime builds up on their lenses. This can reduce visibility without the driver realizing. The A7 Premium Plus/Prestige has standard headlight washers to keep headlight output high. The Q50 doesn’t offer headlight washers.
A power rear sunshade is optional in the A7 to help block heat and glare for the rear passengers. The Q50 doesn’t offer a rear sunshade.
The A7 has standard heated front seats. Heated front seats cost extra on the Q50, and aren’t available on the Q50 Pure. The A7 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 A7 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.
To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the Audi A7 offers an optional wireless phone charging system (Qi) in the center console. The Q50 doesn’t offer wireless personal charging.
J.D. Power and Associates rated the A7 first among midsize premium cars in owner reported satisfaction. This includes how well the vehicle performs and satisfies its owner’s expectations. The Q50 isn’t in the top three.
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