Lithia Auto Stores

Compare the2025 Audi A6VS 2024 Lexus IS

2025 Audi A6
2024 Lexus IS

Safety

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Both the A6 and IS have child safety locks to prevent children from opening the rear doors. The A6 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 IS’ 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.

To provide maximum traction and stability on all roads, All-Wheel Drive is standard on the A6. But it costs extra on the IS.

Both the A6 and the IS have standard driver and passenger frontal airbags, front and rear 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, lane departure warning systems, rearview cameras, available blind spot warning systems, around view monitors and rear cross-path warning.

The National Highway Traffic Safety Administration does 35 MPH front crash tests on new vehicles. In this test, results indicate that the Audi A6 is safer than the Lexus IS:

A6

IS

Driver

STARS

5 Stars

4 Stars

HIC

197

220

Neck Injury Risk

30%

35%

Neck Stress

322 lbs.

429 lbs.

Leg Forces (l/r)

292/435 lbs.

599/675 lbs.

Passenger

STARS

4 Stars

4 Stars

Chest Compression

.5 inches

.5 inches

Neck Injury Risk

41%

41%

Leg Forces (l/r)

263/331 lbs.

399/459 lbs.

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

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 Audi A6 is safer than the Lexus IS:

A6

IS

Front Seat

STARS

5 Stars

5 Stars

HIC

135

142

Chest Movement

.9 inches

1 inches

Abdominal Force

174 lbs.

203 lbs.

Hip Force

262 lbs.

406 lbs.

Rear Seat

STARS

5 Stars

5 Stars

HIC

135

162

Into Pole

STARS

5 Stars

5 Stars

Max Damage Depth

13 inches

15 inches

Hip Force

514 lbs.

650 lbs.

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

Warranty

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The A6’s corrosion warranty is 6 years longer than the IS’ (12 vs. 6 years).

There are over 25 percent more Audi dealers than there are Lexus dealers, which makes it easier should you ever need service under the A6’s warranty.

Reliability

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A hardened steel chain, with no maintenance needs, drives the camshafts in the A6’s engine. A rubber cam drive belt that needs periodic replacement drives the IS’ camshafts. If the IS’ belt breaks, the engine could be severely damaged when the pistons hit the opened valves.

Engine

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The A6 has more powerful engines than the IS:

Horsepower

Torque

A6 45 TFSI 2.0 turbo 4-cylinder hybrid

261 HP

273 lbs.-ft.

A6 55 TFSI 3.0 turbo V6 hybrid

335 HP

369 lbs.-ft.

IS 300 2.0 turbo 4-cylinder

241 HP

258 lbs.-ft.

IS 300 AWD 3.5 DOHC V6

260 HP

236 lbs.-ft.

IS 350 F Sport 3.5 DOHC V6

311 HP

280 lbs.-ft.

As tested in Motor Trend the A6 55 TFSI 3.0 turbo V6 hybrid is faster than the Lexus IS:

A6

IS 300 AWD

IS 350 F Sport

Zero to 60 MPH

5 sec

5.7 sec

5.7 sec

Quarter Mile

13.5 sec

14.3 sec

14.2 sec

Speed in 1/4 Mile

102.7 MPH

97.6 MPH

100.1 MPH

Fuel Economy and Range

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On the EPA test cycle the A6 gets better mileage than the IS:

MPG

A6

AWD

2.0 turbo 4-cyl. Hybrid

24 city/31 hwy

3.0 turbo V6 Hybrid

22 city/30 hwy

IS

RWD

5.0 V8

17 city/25 hwy

2.0 turbo 4-cyl.

21 city/31 hwy

3.5 DOHC V6

20 city/28 hwy

AWD

350 F Sport 3.5 DOHC V6

19 city/26 hwy

300 AWD 3.5 DOHC V6

19 city/26 hwy

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

In heavy traffic or at stoplights the A6’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. If the conditions warrant or the driver wishes, the system can be manually disabled at any time for the duration of a trip. The IS doesn’t offer an automatic engine start/stop system.

The A6 has 1.9 gallons more fuel capacity than the IS (19.3 vs. 17.4 gallons), for longer range between fill-ups.

Transmission

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The A6 offers an available 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 IS doesn’t offer an SMG or a conventional manual transmission.

Brakes and Stopping

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For better stopping power the A6’s standard brake rotors are larger than those on the IS:

A6

IS

Front Rotors

13.3 inches

13.1 inches

Rear Rotors

13 inches

11.7 inches

The A6 stops much shorter than the IS:

A6

IS

60 to 0 MPH

107 feet

117 feet

Motor Trend

60 to 0 MPH (Wet)

137 feet

141 feet

Consumer Reports

Tires and Wheels

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For better traction, the A6 has larger standard tires than the IS (245/45R19 vs. 235/45R18). The A6’s optional tires are larger than the largest tires available on the IS (255/40R20 vs. 235/40R19).

The A6 55 TFSI’s optional tires provide better handling because they have a lower 35 series profile (height to width ratio) that provides a stiffer sidewall than the IS F Sport’s 40 series front tires.

For better ride, handling and brake cooling the A6 has standard 19-inch wheels. Smaller 18-inch wheels are standard on the IS 300. The A6 55 TFSI’s optional 21-inch wheels are larger than the 19-inch wheels on the IS F Sport.

Suspension and Handling

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The A6 has standard front and rear gas-charged shocks for better control over choppy roads. The IS base model’s suspension doesn’t offer gas-charged shocks.

For a smoother ride and more stable handling, the A6’s wheelbase is 4.9 inches longer than on the IS (115.1 inches vs. 110.2 inches).

For better handling and stability, the track (width between the wheels) on the A6 is 2 inches wider in the front and 1.1 inches wider in the rear than the average track on the IS.

The A6 Prestige handles at .93 G’s, while the IS 300 AWD pulls only .88 G’s of cornering force in a Motor Trend skidpad test.

The A6 Prestige executes Motor Trend’s “Figure Eight” maneuver 1 seconds quicker than the IS 300 AWD (24.9 seconds @ .75 average G’s vs. 25.9 seconds @ .7 average G’s).

Chassis

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The design of the Audi A6 amounts to more than styling. The A6 has an aerodynamic coefficient of drag of .28 Cd. That is lower than the IS (.28 to .3) and many sports cars. A more efficient exterior helps keep the interior quieter and helps the A6 get better fuel mileage.

Passenger Space

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Because it has more passenger and cargo room, the EPA rates the A6 a Mid-size car, while the IS is rated a Compact.

The A6 has 8.8 cubic feet more passenger volume than the IS (99 vs. 90.2).

The A6 has 1.9 inches more front shoulder room, 1.2 inches more rear headroom, 5.2 inches more rear legroom and 3.1 inches more rear shoulder room than the IS.

Cargo Capacity

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The A6 has a much larger trunk than the IS (13.7 vs. 10.8 cubic feet).

To make loading and unloading groceries and cargo easier when your hands are full, the A6’s trunk can be opened just by kicking your foot under the back bumper, leaving your hands completely free. The A6 Premium Plus/Prestige also has a standard power trunk, which opens and closes automatically by pressing a button or just by kicking your foot under the back bumper. The IS doesn’t offer a power or hands-free opening trunk.

Towing

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The A6 has a 3500 lbs. towing capacity. The IS has no towing capacity.

Ergonomics

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The A6’s standard easy entry system raises the steering wheel and glides the driver’s seat back, making it easier for the driver to get in and out. An easy entry system costs extra on the IS.

The A6 Prestige has a standard heads-up display that projects speed, warning 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 IS doesn’t offer a heads-up display.

The power windows standard on both the A6 and the IS have locks to prevent small children from operating them. When the lock on the A6 is engaged the driver can still operate all of the windows, for instance to close one opened by a child. The IS prevents the driver from operating the other windows just as it does the other passengers.

The A6’s standard Audi Advanced Key allows you to unlock the doors from any outside door handle, open the trunk, and start the engine, all without removing the key from the pocket or purse. Smart Access standard on the IS doesn’t offer a sensor on the rear doors, so you’ll have to reach a front handle to unlock the rear door.

The A6’s power window, power lock, power mirror and cruise control switches are lit from behind, making them plainly visible and easier to operate at night. The IS’ cruise control switches are unlit, making them difficult to find at night and operate safely.

The A6’s rain-sensitive wipers adjust their speed and turn on and off automatically based on the amount of rainfall on the windshield. This allows the driver to concentrate on driving without constantly adjusting the wipers. The IS’ standard manually variable intermittent wipers have to be constantly adjusted.

Heated windshield washer nozzles are standard on the A6 to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The IS doesn’t offer heated windshield washer nozzles.

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 Premium Plus/Prestige has standard headlight washers to keep headlight output high. The IS doesn’t offer headlight washers.

To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the A6 has standard extendable sun visors. The IS doesn’t offer extendable visors.

A power rear sunshade and manual rear side window sunshades are standard in the A6 Prestige to help block heat and glare for the rear passengers. The IS doesn’t offer rear side window sunshades.

Both the Audi A6 and Lexus IS offer exterior mirrors that can be folded to provide convenience. The A6 features standard power folding mirrors, which allow for easy, one-touch folding or unfolding at the driver’s discretion. This provides added convenience when maneuvering or parking, as well as when walking past the parked vehicle. In comparison, the IS’ foldable mirrors are manual, requiring the driver to get out and physically fold them once parked and unfold them before getting in.

The A6 has standard heated front seats. Heated front seats cost extra on the IS. The A6 Premium Plus/Prestige also has standard heated rear seats to keep those passengers extremely comfortable in the winter. Heated rear seats aren’t available in the IS.

The A6 Prestige has standard massaging front seats in order to maximize comfort and eliminate fatigue on long trips. Massaging seats aren’t available in the IS.

The Audi A6 has a standard Homelink wireless remote control system for garage door operation and device management, conveniently located on the rear view mirror. Homelink® eliminates the need for separate garage door openers and associated risks of losing, breaking, or having dead batteries. Lexus charges extra for Homelink® on the IS.

To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the Audi A6 offers an optional wireless phone charging system (Qi) in the front center console. The IS doesn’t offer wireless personal charging.

The A6 Prestige’s Park Assist Plus can parallel park or back into a parking spot by itself, starting, stopping and changing direction automatically. Remote Park Assist Plus will park and retrieve your car remotely: press a button and watch it park itself. This is ideal for tight locations. The IS doesn’t offer an automated parking system.

Economic Advantages

© 1999 - 2024Advanta-STAR Automotive Research, all rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America (“Advanta-STAR”). If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it, or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. Removal of this watermark/notification without prior written license and approval received from Advanta-STAR is an agreement, understanding, and/or stipulation by the person(s), entities, agents, attorneys, and any other persons involved in the removal of this watermark/notification (including but not limited to Search Optics, LLC and any and all parent entities, sister entities, and subsidiary entities of Search Optics, LLC and/or any other entity, agent, attorney, and persons related in any manner to Search Optics, LLC) to: 1) an agreed upon amount of liquidated monetary damages of a minimum of $1,250,000.00 US Dollars in favor of Advanta-STAR; 2) the jurisdiction and enforcement of any legal claims associated with this matter asserted by Advanta-STAR in the United States Federal District Court in Portand, Oregon; and 3) service of process of any legal claims asserted by Advanta-STAR associated with this matter may be accomplished by First-Class Postage by the United States Postal Service or comparable service. XPYNN-M34HG 2a06:98c0:3600::103 2024/11/21

Insurance will cost less for the A6 owner. The Car Book by Jack Gillis rates the A6 with a number “3” insurance rate while the IS is rated higher at a number “5” rate.

According to The Car Book by Jack Gillis, the A6 is less expensive to operate than the IS because typical repairs cost much less on the A6 than the IS, including $85 less for a starter, $692 less for a timing belt/chain and $901 less for a power steering pump.

Recommendations

© 1999 - 2024Advanta-STAR Automotive Research, all rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America (“Advanta-STAR”). If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it, or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. Removal of this watermark/notification without prior written license and approval received from Advanta-STAR is an agreement, understanding, and/or stipulation by the person(s), entities, agents, attorneys, and any other persons involved in the removal of this watermark/notification (including but not limited to Search Optics, LLC and any and all parent entities, sister entities, and subsidiary entities of Search Optics, LLC and/or any other entity, agent, attorney, and persons related in any manner to Search Optics, LLC) to: 1) an agreed upon amount of liquidated monetary damages of a minimum of $1,250,000.00 US Dollars in favor of Advanta-STAR; 2) the jurisdiction and enforcement of any legal claims associated with this matter asserted by Advanta-STAR in the United States Federal District Court in Portand, Oregon; and 3) service of process of any legal claims asserted by Advanta-STAR associated with this matter may be accomplished by First-Class Postage by the United States Postal Service or comparable service. XPYNN-M34HG 2a06:98c0:3600::103 2024/11/21

Consumer Reports® recommends both the Audi A6 and the Lexus IS, based on reliability, safety and performance.

© 1999 - 2023 Advanta-STAR Automotive Research. All rights reserved.