Another day, another issue on my 2002 Audi TT. If you own a Mk1 Audi TT, you’ve probably got your hands full with issues under the hood. The most common problem considering these cars are about two decades old now is aged rubber hoses in the engine bay. OEM rubber hoses are an ideal replacement for these hoses, but using universal hoses tend to be more economical and can still be decent replacements.