Audi A3/S3/ RS3 8P
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A3 / 8P
// The PQ35 original

Audi A3/S3/ RS3 8P

The 8P generation put Audi properly into the hot-hatch fight - EA113 turbo fours in the A3 and S3, and the first RS3 with the 2.5 TFSI five. It shares its PQ35 platform with the Mk5/6 Golf, so the parts well runs deep.

Downpipes & exhaustsIntercoolersIntakesTurbo upgradesCoilovers & suspensionBrakesECU & DSG tuningStyling
Chassis8P PQ35
Engines2.0 TFSI 2.5 TFSI
Production2003 - 2013
LayoutFWD / quattro
A32.0 TFSI
2004-2013 EA113/EA888 200hp
Same engines as the period GTI - the K04 conversion path applies here too.
S3S3 8P
2006-2012 EA113 265hp
K04 from the factory plus quattro - Stage 1 ~310hp, Stage 2 ~340hp on stock hardware.
RS3RS3 8P
2011-2012 2.5 TFSI 340hp
The first RS3. The five-cylinder takes a map to ~420hp and has one of the great soundtracks.
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// Trusted on this platform
Top brands for the 8P
// The platform

Where fast Audis got affordable

The 8P S3 was the quattro answer to the Mk5 GTI - same EA113 heart, factory K04 turbo, all-wheel traction - and today it's one of the cheapest routes into a genuinely quick, genuinely tunable German hatch. Software alone finds 45hp; pump, intake and exhaust support 340+. The 8P RS3 brought the 2.5 TFSI five-cylinder that still defines the class. Because the platform is shared with the Mk5/6 Golf, chassis and brake upgrades are plentiful and proven.

The proven upgrade path

01
Stage 1
Map only - +45hp on the S3's K04, +80hp on the RS3's five-cylinder.
02
Stage 2
Downpipe, intercooler and HPFP (EA113) with a matched map - 340hp S3s on stock turbo.
03
Chassis
Coilovers and SuperPro bushes - quattro grip rewards geometry more than most FWD rivals.
04
Beyond
Hybrid K04 or big-turbo EA113, and 450hp+ RS3 builds - scoped through our custom mapping.
// In-house ECU tuning
In-house ECU tuning for the EA113 & 2.5 TFSI
Stage 1-3 and custom mapping for the EA113 & 2.5 TFSI, all done in-house - the map to match the hardware above.
Explore ECU tuning →

8P - frequently asked

Do Golf parts fit the 8P?

Many do - the PQ35 platform is shared with the Mk5/Mk6 Golf, so engine hardware and plenty of suspension crosses over. quattro cars differ at the rear; every listing here is confirmed for the 8P shell.

How far can a stock-turbo S3 go?

The factory K04 supports roughly 340-350hp with downpipe, intercooler, fuel pump and a proper map. Past that you're into hybrid turbo territory.

Is the 8P RS3 worth tuning?

Emphatically - the 2.5 TFSI picks up around 80hp on software alone, and the engine went on to prove itself at 500hp+ in later cars. Supporting cooling is the sensible pairing.

Do you offer ECU tuning in-house?

Yes - Stage 1-3 and custom ECU mapping are done fully in-house. We don't currently offer parts fitting, but we're happy to advise on your install.

// Browse the range

8P parts by category

8P Downpipes & exhausts→8P Intercoolers→8P Intakes→8P Turbo upgrades→8P Coilovers & suspension→8P Brakes→8P ECU & DSG tuning→8P Styling→