Everything You Need to know about the mk4 gti

You may be in the market for a MK4 GTI, perhaps you already have one or just want to learn everything you can about them. After reading this article you will be up to speed on the MK4 GTI.

The MK4 GTI was in production from 1998 – 2006. It quickly became the best selling car in Europe because of its affordability, performance and quaility. The MK4 GTI was replaced in 2003 in European markets but remained in production across various other markets.


The engine in the MK4 GTI is a 20 valve 1.8 litre turbocharged engine. The earlier versions of this engine made 150HP with a 155 ft lbs of torque at 8.7psi. 2002 and onward engines produced 180HP and 174 ft lbs of torque at 11.6psi. All of these engines can be easily tuned from various tuning companies such as urotronic, APR or other companies with a simple off the shelf tune. After tuning the this engine can make over 200HP with very little supporting mods.

There are many different engine codes that tell you what your engine produces. This can be found on the block in your engine bay.

Engine Code: AWD
  • Model Years: 2000
  • Compression Ratio: 9.5:1
  • Horsepower: 150hp @ 5700RPM
  • Torque: 155ft. lbs.@ 1750RPM
  • Turbo: K03
  • Boost: .6 Bar (8.7psi)
Engine Code: APH
  • Model Years: 2000
  • Compression Ratio: 9.5:1
  • Horsepower (SAE Net): 150hp @ 5500RPM
  • Torque: 155ft. lbs.@ 1950RPM
  • Turbo: K03
  • OE Boost: .6 Bar (8.7psi)

Engine Code

  • Model Years: 2001
  • Compression Ratio: 9.3:1
  • Horsepower (SAE Net): 150hp @ 5700RPM
  • Torque: 162ft. lbs.@ 1950RPM
  • Turbo: K03s
  • OE Boost: .6 Bar (8.7psi)

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