Audi A4 · Engine family · 4 offered

Audi A4 3.1L six-cylinder

The Audi is the most common engine code the VIN decodes to on the 3.1L six-cylinder configurations below; hybrid variants of the same displacement carry their own code. Rated at 255 hp. We decode it on 2,234 VINs across 20 factory builds, and 27 of those cars are on sale today at a typical $7,695.

Cylinders
6
Power
255 hp
Induction
Naturally aspirated
Fuel
Gasoline
Fitted
2005–2009
Drive
AWD

◷ Updated August 31, 2026 ▤ National asking prices, refreshed nightly

$7,695
Typical asking price, cars with this engine
27
On sale today with the 3.1L 6-cyl
2005–2009
Model years it was fitted
20
Factory configurations
2,234
A4 VINs decoded with it

Where the 3.1L 6-cyl sits in the A4 engine lineup

Every engine family this model was sold with, ordered by size. The bar spans the model years it was fitted; the price is what cars carrying it ask today. Older engines look cheaper because the cars are older — the only fair comparison is an engine whose years overlap this one's.

1.8L 4-cyl
1997–2006
$5,990
150–170 hp · 38 on sale
2.0L 4-cyl turbo
2005–2025
$9,980
188–261 hp · 3,044 on sale
3.0L 6-cyl
2002–2006
$5,995
220 hp · 43 on sale
3.1L 6-cyl this page
2005–2009
$7,695
255 hp · 27 on sale

4 engine families, one nameplate. Open the Audi A4 price hub to compare them side by side, or to jump into any of the others.

Which A4 years got a 3.1L 6-cyl engine

Every model year this engine was fitted to, newest first. The bar is how much of the family's VIN volume sits in that year — long bars are the years this engine was everywhere.

Year Share of VINs VINs On sale Builds
2009 110 6 1 2008 559 6 5 2007 861 5 6 2006 422 6 6 2005 282 4 2

VIN counts come from our decode of the model's build patterns, not from live listings. A year link opens the full A4 report for that year — every engine of the model, not just this one.

20 factory configurations with this engine

Each one is a distinct build as the VIN decodes it — trim, body, gearbox and equipment. Open a build sheet for its full spec and the VINs recorded on it.

2009

1 build
2009 A4 Quattro waudh48h Convertible · AWD · 255 hp

2008

5 builds
2008 A4 base wauah78e Sedan · 255 hp 2008 A4 Quattro waudh48h Convertible · AWD · 255 hp 2008 A4 S Line Quattro waueh78e Sedan · AWD · 255 hp 2008 A4 Quattro waudh78e Sedan · AWD · 255 hp 2008 A4 Quattro waukh78e AWD · 255 hp

2007

5 builds
2007 A4 S Line Quattro waueh48h Convertible · AWD · 255 hp 2007 A4 Quattro waudh48h Convertible · AWD · 255 hp 2007 A4 S Line Quattro waueh78e Sedan · AWD · 255 hp 2007 A4 3.2 wauah78e Sedan · 255 hp 2007 A4 Quattro waukh78e AWD · 255 hp

2006

6 builds
2006 A4 Quattro waukg78e AWD · 255 hp 2006 A4 Quattro waukh78e AWD · 255 hp 2006 A4 Quattro waudh78e Sedan · AWD · 255 hp 2006 A4 S Line Quattro waueh78e Sedan · AWD · 255 hp 2006 A4 base wauah78e Sedan · 255 hp 2006 A4 Quattro waudg78e Sedan · AWD · 255 hp

2005

2 builds
2005 A4 Quattro waudg78e Sedan · AWD · 255 hp 2005 A4 Quattro waudg68e Sedan · AWD · 255 hp

Showing the 19 most-built configurations of 20. Every 2009 A4 build →

The 3.1L 6-cyl A4: common questions

Which A4 years have the 3.1L 6-cyl?

2005–2009, without a break — 5 model years in our VIN decode, across 20 factory configurations and 2,234 VINs.

What does a 3.1L 6-cyl A4 cost?

$7,695 is the typical asking price across the 27 cars with this engine on sale today. The year-by-year ladder above splits that by model year — the spread between the oldest and newest year is far wider than the spread between engines.

What is the engine code, and does it matter?

Audi — the code the VIN decodes to on the configurations on this page. It matters when you order parts or read a service history: the same displacement badge on another model can be a different code with different outputs.

3.1L 6-cyl A4 on the market

Individual vehicles carrying this engine, each with its own listing-history page. The sample is pinned to fixed VIN buckets, so it does not reshuffle day to day.