Locating the engine code on your VW or Audi

Tunes are sold by engine code, not by model. A MK4 Jetta alone came with a 2.0, a 1.8T, a VR6 and a TDI. The code is three or four characters, like AWP, BPY or CCTA.

Where to find it

• Data sticker: in the spare wheel well or under the trunk floor on most VW and Audi models. It lists the VIN, paint code, transmission code and engine code together. Start here.
• Service booklet: most cars have a copy of the same sticker inside the original service book.
• Engine bay: on a sticker on the timing belt cover, or stamped on the engine. Many 1.8T engines have it stamped on the head.
• Scan tool: VCDS, OBD11 and most VW scan tools read enough ECU identification to confirm what you have.
• VIN: a VW or Audi dealer can look up the original engine code from the VIN.

Found it? Find your car below.

Common cars and their codes

The same model often came with more than one engine, so go by the sticker. The table covers the common US cars, not every code. Where a row lists more than one code, any of them can be in that car.

Engine guides

Codes, stages and what each stage needs:

• 1.8T 20v
• 2.0 8v
• VR6 12v and 24v
• 1.9 and 2.0 TDI
• EA113 2.0T FSI
• EA888 Gen 1 and 2
• EA888 Gen 3
• 1.4 TSI
• 2.5L 07K