A sport mode is added to the "multitronic" CVT, the center console's retractable cup holder is replaced by a power point and all quattro models now come standard with a sunroof.

Edmunds says

Solid performance and an elegant cabin design make the A6 a worthy competitor in the luxury sedan class, but BMW's 5 Series is more athletic and Mercedes carries more brand cachet, so it can't be called a class leader just yet.

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For sale near Mountain View, CA

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2004 Audi A6
4.2 quattro Sedan
$3,995
- 180,415 miles
- No accidents, 3 owners, personal use
- 15 City / 22 Hwy MPG
- Seattle Auto Inc. (722 mi away)
- AWD/4WD
- Leather Seats
- Sunroof/Moonroof
- Power Driver Seat
- Multi-Zone Climate C...
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Located in Lynnwood, WA
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: Yes
Lemon Status: No
Free History Report: No
Features and Specs:
18 Combined MPG (15 City/22 Highway)
Listing Information:
VIN: WAUML64B14N009593
Stock: AW009593
Certified Pre-Owned: No
Listed since: 05-01-2025
2004 Audi A6
2.7T quattro Sedan
$15,490
- 29,911 miles
- No accidents, 2 owners, personal use only
- 16 City / 23 Hwy MPG
- Urban Motors Blue (934 mi away)
- AWD/4WD
- Heated seats
- Leather Seats
- Sunroof/Moonroof
- Power Driver Seat
Close
Located in Denver, CO
2004 Audi A6 2.7T Quattro AWD. Must see in person to appreciate condition. Colorado Owned. No Accident CarFax History. Forge Star F14 Black Wheels. Le...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
19 Combined MPG (16 City/23 Highway)
Listing Information:
VIN: WAULD64B34N014349
Stock: 54613
Certified Pre-Owned: No
Listed since: 04-09-2025

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Audi A6 Owner Reviews

4.8

93 reviews

5(81%)

4(14%)

3(5%)

2(0%)

1(0%)

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Most Helpful Owner Reviews

Once you go QUATTRO you cant go back!

VGHOSTINE, 03/08/2010

2004 Audi A6 2.7T S-Line quattro AWD 4dr Sedan (2.7L 6cyl Turbo 5A)

This is the best piece of man made machine I have ever driven. I drove Infiniti G35's and Nissan 350Z and then had two hondas and one gm. Of all those cars, I can say this is in its own category and nothing comes to close to the performance and comfort and style and OH YOU HAVE A NICE CAR comments. MY next car will be an A8L but I will enjoy every bit of my A6. Every time I start the …

Phenomenal Car

Audifan, 09/17/2010

2004 Audi A6 2.7T S-Line quattro AWD 4dr Sedan (2.7L 6cyl Turbo 5A)

Bought the '04 S-line in Sept '09 with 55k miles on it. Mint condition for 15k. Could not be happier! added APR chip to get HP to 310 and it really makes a difference. Used to have 3 series BMW and this blows it away. Build quality is so much better. best vehicle i've ever driven in foul weather (snow, rain). Very safe feeling in all situations. One thing i learned is Dealers will kill …

2004 model year has the best reliability

jimsrod, 07/10/2009

2004 Audi A6 2.7T S-Line quattro AWD 4dr Sedan (2.7L 6cyl Turbo 5A)

I'm the 2nd owner off lease. I've been driving it for 2 years now. First couple of months the car was stock and throttle response a bit dead. I had the ECU chipped and it really livened it up. Plus gas mileage is a couple per gallon better (not great about 20 MPG combined city / hwy). I've tinted the windows and added aftermarket wheels to the otherwise boring design of the 18" S- …

Pre-owned yields luxury at a reasonable price

Philip Meidell, 04/10/2016

2004 Audi A6 2.7T S-Line quattro AWD 4dr Sedan (2.7L 6cyl Turbo 5A)

I've driven ~40,000 miles since I bought it at ~67,000 miles. I'm 6'5", and most other cars don't fit me well. This car is comfortable, roomy, and has a nice, big trunk. I love the all wheel drive, especially in the winter. This car has been remarkably reliable for me. (Hope I didn't just jinx myself!) I had the timing belt service including water pump etc. performed at the prescribed … mileage. I've replaced the battery, brake pads and rotors and tires, and a couple of front end alignments. The only non-regular maintenance items I've had to do is replacing is a tie rod end and both front axles, all due to torn rubber boots at the ball joint and CV-joints, respectively. At its age, I can't really complain. None of the work was done by the dealer. This is an Audi after all, so expect to pay more for work and parts than on other cars. I've had good luck with a couple of local independent mechanics. The 2.7 liter bi-turbo is nice and peppy when needed. I usually buy this class of car with more than a couple of years on it. Since I like a firm, responsive ride I'll usually start by investing in shocks and struts all around, but this car has handled beautifully from the get-go and right up to the present, so I still have the original suspension components. Fuel consumption isn't great by today's standards: about 21 mpg around town, and 26 on the highway, and I drive rather carefully. A common problem on a used Audi is oil leaks around the engine. Oftentimes the leak is above the exhaust manifold so drips or runs down to vaporize and stink. I haven't had this problem, but be mindful of this issue. Another issue I need to point out, NOT related to this car but on any Audi with the 2 liter, 4 cylinder turbo engine built roughly between 2006 - 2013. This engine has a very serious problem with oil consumption. It's not leakage. It simple burns it at the rate of a quart every 600 to 1500 miles. It's a widely known issue. My wife's 2007 A4 Avant has this problem. Of course we learned about it after we bought it. Response from the seller, "It's always done it." From the dealer, "They all do it." Both are right. Caveat emptor. I find it curious to say the least that Audi, a German company that otherwise makes beautifully engineered cars, hasn't figured out to make an oil seal that lasts, either external, the dripping, or internal, the burning of oil. Would I buy another one? Most likely. I like the overall feel.

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2004 A6 Highlights

Type:

Wagon

Base MSRP Excludes Destination Fee	$40,650
Engine Type	Gas
Combined MPG	19 MPG
Cost to Drive	$322/month
Seating	5 seats
Cargo Capacity All Seats In Place	36.4 cu.ft.
Drivetrain	all wheel drive
Warranty	4 years / 50,000 miles

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Safety

Key safety features on the A6 include:

Alarm
Stability Control

IIHS Rating

The Insurance Institute of Highway Safety uses extensive crash tests to determine car safety.

Small Overlap Front Driver-Side Test
Not Tested
Small Overlap Front Passenger-Side Test
Not Tested
Moderate Overlap Front Test – Original
Acceptable
Moderate Overlap Front Test – Updated
Not Tested
Side Impact Test – Original
Not Tested
Side Impact Test – Updated
Not Tested
Roof Strength Test
Not Tested
Rear Crash Protection / Head Restraint
Not Tested

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2004 Audi A6 Review

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Edmunds' Expert Review

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For sale near Mountain View, CA

2004 Audi A6
4.2 quattro Sedan

AutoCheck Vehicle History Summary

2004 Audi A6
2.7T quattro Sedan

AutoCheck Vehicle History Summary

Audi A6 Owner Reviews

Most Helpful Owner Reviews

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2004 Audi A62.7T quattro Sedan

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Audi A6 Owner Reviews

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Once you go QUATTRO you cant go back!

Phenomenal Car

2004 model year has the best reliability

Pre-owned yields luxury at a reasonable price

2004 A6 Highlights

Safety

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2004 Audi A6
4.2 quattro Sedan

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2.7T quattro Sedan