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Both the Q8 and LX 570 have child safety locks to prevent children from opening the rear doors. The Q8 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 LX 570’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 Q8 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 LX 570 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.
A passive infrared night vision system optional on the Q8 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 LX 570 doesn’t offer a night vision system.
For better protection of the passenger compartment, the Q8 uses safety cell construction with a three-dimensional high-strength frame that surrounds the passenger compartment. It provides extra impact protection and a sturdy mounting location for door hardware and side impact beams. The LX 570 uses a body-on-frame design, which has no frame members above the floor of the vehicle.
Both the Q8 and the LX 570 have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front and rear seatbelt pretensioners, height adjustable front shoulder belts, four-wheel antilock brakes, all wheel drive, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, rearview cameras, available lane departure warning systems, blind spot warning systems, around view monitors and rear cross-path warning.
The Q8’s corrosion warranty is 6 years longer than the LX 570’s (12 vs. 6 years).
There are over 26 percent more Audi dealers than there are Lexus dealers, which makes it easier should you ever need service under the Q8’s warranty.
On the EPA test cycle the Q8 gets better fuel mileage than the LX 570 (17 city/22 hwy vs. 13 city/18 hwy).
Regenerative brakes improve the Q8’s fuel efficiency by converting inertia back into energy instead of wasting it. The LX 570 doesn’t offer a regenerative braking system.
In heavy traffic or at stoplights the Q8’s engine automatically turns off when the vehicle is stopped, saving fuel and reducing pollution. The engine is automatically restarted when the driver gets ready to move again. (Start/Stop isn’t accounted in present EPA fuel mileage tests.) The LX 570 doesn’t offer an automatic engine start/stop system.
For better stopping power the Q8’s brake rotors are larger than those on the LX 570:
The Q8’s optional tires provide better handling because they have a lower 40 series profile (height to width ratio) that provides a stiffer sidewall than the LX 570’s 50 series tires.
For better ride, handling and brake cooling the Q8 offers optional 22-inch wheels. The LX 570’s largest wheels are only 21-inches.
For superior ride and handling, the Audi Q8 has fully independent front and rear suspensions. An independent suspension allows the wheels to follow the road at the best angle for gripping the pavement, without compromising ride comfort. The Lexus LX 570 has a solid rear axle, with a non-independent rear suspension.
For a smoother ride and more stable handling, the Q8’s wheelbase is 5.7 inches longer than on the LX 570 (117.9 inches vs. 112.2 inches).
For better handling and stability, the track (width between the wheels) on the Q8 is 1.2 inches wider in the front and 2 inches wider in the rear than the average track on the LX 570.
The Audi Q8 may be more efficient, handle and accelerate better because it weighs about 800 to 1000 pounds less than the Lexus LX 570.
The Q8 is 3.7 inches shorter than the LX 570, making the Q8 easier to handle, maneuver and park in tight spaces.
The Q8 is 8.1 inches shorter in height than the LX 570, making the Q8 much easier to wash and garage and drive (lower center of gravity).
Unibody construction lowers the Q8’s center of gravity significantly without reducing ground clearance. This contributes to better on the road handling and better off-road performance and stability. In addition, unibody construction makes the chassis stiffer, improving handling and reducing squeaks and rattles. The LX 570 uses body-on-frame design instead.
The Q8 has a much larger cargo volume with its rear seat up than the LX 570 with its rear seat up (28.6 vs. 9.1 cubic feet). The Q8 has a much larger cargo volume with its rear seat folded than the LX 570 with its rear seat folded (67.5 vs. 45 cubic feet).
The Q8’s liftgate lifts up in one piece, completely out of the way of loading and unloading, while sheltering the cargo loading area. The LX 570’s tailgate’s top part raises up, but the bottom part lowers, getting in the way of loading and making an uneven surface for sliding cargo.
To make loading groceries and cargo easier when your hands are full, the Q8 Premium Plus/Prestige’s liftgate can be opened and closed just by kicking your foot under the back bumper, leaving your hands completely free. The LX 570 doesn’t offer a hands-free gesture to open its tailgate, forcing you to put cargo down if your hands are full.
The Q8’s standard towing capacity is much higher than the LX 570’s (7700 vs. 7000 pounds).
Unlike the driver-only memory system in the LX 570, the Q8 offers an optional passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat, steering wheel position and outside mirror angle and the front passenger seat also adjusts to the new passenger’s preset preferences.
The power windows standard on both the Q8 and the LX 570 have locks to prevent small children from operating them. When the lock on the Q8 is engaged the driver can still operate all of the windows, for instance to close one opened by a child. The LX 570 prevents the driver from operating the other windows just as it does the other passengers.
A manual rear sunshade is optional in the Q8 to help block heat and glare for the rear passengers. The LX 570 doesn’t offer a rear sunshade.
The Q8’s power mirror controls are mounted on the armrest for easy access. The LX 570’s power mirror controls are on the dash, hidden behind the steering wheel, where they are awkward to manipulate.
© 1991-2018 Advanta-STAR Automotive Research. All rights reserved.
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