2019 Lexus LS Series vs. 2019 Audi A6

Detailed Review, Specifications & Comparison

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Over 200 people are killed each year when backed over by motor vehicles. The LS Series has a standard Auto-Stop that 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 LS Series’ driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The A6 doesn’t offer a driver alert monitor.

Both the LS Series and the A6 have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front and rear seatbelt pretensioners, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, post-collision automatic braking systems, daytime running lights, rearview cameras, available all wheel drive and around view monitors.

The Lexus LS Series weighs 441 to 827 pounds more than the Audi A6. The NHTSA advises that heavier cars are much safer in collisions than their significantly lighter counterparts.


Lexus’ powertrain warranty covers the LS Series 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.


J.D. Power and Associates’ 2018 Initial Quality Study of new car owners surveyed provide the statistics that show that Lexus vehicles are better in initial quality than Audi vehicles. J.D. Power ranks Lexus 8th in initial quality, above the industry average. With 21 more problems per 100 vehicles, Audi is ranked 25th, below the industry average.

J.D. Power and Associates’ 2018 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Lexus vehicles are more reliable than Audi vehicles. J.D. Power ranks Lexus first in reliability, above the industry average. With 42 more problems per 100 vehicles, Audi is ranked 13th.

From surveys of all its subscribers, Consumer Reports’ December 2018 Auto Issue reports that Lexus vehicles are more reliable than Audi vehicles. Consumer Reports ranks Lexus first in reliability. Audi is ranked 7th.


The LS 500h’s standard 3.5 DOHC V6 hybrid produces 19 more horsepower (354 vs. 335) than the A6’s 3.0 turbo V6 hybrid. The LS 500’s standard 3.4 turbo V6 produces 81 more horsepower (416 vs. 335) and 73 lbs.-ft. more torque (442 vs. 369) than the A6’s 3.0 turbo V6 hybrid.

Fuel Economy and Range

On the EPA test cycle the LS 500h AWD gets better fuel mileage than the A6 (23 city/31 hwy vs. 22 city/29 hwy).

The LS Series’ standard fuel tank has 2.4 gallons more fuel capacity than the A6 (21.7 vs. 19.3 gallons), for longer range between fill-ups. The LS Series Hybrid’s standard fuel tank has 2.9 gallons more fuel capacity than the A6 (22.2 vs. 19.3 gallons).


A 10-speed automatic is standard on the Lexus LS Series, for better acceleration and lower engine speed on the highway. Only a seven-speed automatic is available for the A6.

The LS 500h has a standard continuously variable transmission (CVT). With no “steps” between gears, it can keep the engine at the most efficient speed for fuel economy, or keep it at its peak horsepower indefinitely for maximum acceleration. The A6 doesn’t offer a CVT.

Brakes and Stopping

For better stopping power the LS Series’ brake rotors are larger than those on the A6:


LS Series

LS Series F-Sport


Front Rotors

14 inches

15.7 inches

13.3 inches

Rear Rotors

13.1 inches

14.1 inches

13 inches

Tires and Wheels

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires standard on the LS Series 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

The LS Series F-Sport offers active sway bars, which help keep it flat and controlled during cornering, but disconnect at lower speeds to smooth the ride and offer greater off-road suspension articulation. This helps keep the tires glued to the road on-road and off. The A6 doesn’t offer an active sway bar system.

The LS Series has a standard automatic front and rear load leveling suspension to keep ride height level with a heavy load or when towing. The LS Series’ height leveling suspension allows the driver to raise ride height for better off-road clearance and then lower it again for easier entering and exiting and better on-road handling. The A6 doesn’t offer a load leveling suspension.

For a smoother ride and more stable handling, the LS Series’ wheelbase is 7.9 inches longer than on the A6 (123 inches vs. 115.1 inches).

The LS Series’ front to rear weight distribution is more even (51% to 49%) than the A6’s (55% to 45%). This gives the LS Series more stable handling and braking.


The LS Series uses 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

The LS Series has 1 inch more front shoulder room and 1.5 inches more rear legroom than the A6.

For enhanced passenger comfort on long trips the LS Series’ available rear seats recline. The A6’s rear seats don’t recline.

Cargo Capacity

The LS Series has a much larger trunk than the A6 (17 vs. 13.7 cubic feet).


The LS Series has a standard remote vehicle starting system, so the vehicle can be started from inside the driver's house. This allows the driver to comfortably warm up the engine before going out to the vehicle. The climate system will also automatically heat or cool the interior. The A6 doesn’t offer a remote starting system.

The LS Series has standard front air conditioned seats and offers them optionally in the rear. This keeps the passengers comfortable and takes the sting out of hot seats in summer. The A6 doesn’t offer air-conditioned seats in the rear.

The LS Series offers an optional 115-volt a/c outlet on the center console, allowing you to recharge a laptop or run small household appliances without special adapters that can break or get misplaced. The A6 doesn’t offer a house-current electrical outlet.

Model Availability

The LS Series is available in both rear-wheel drive and all-wheel drive configurations. The A6 doesn’t offer a two-wheel drive configuration.

© 1991-2018 Advanta-STAR Automotive Research. All rights reserved.

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