MTM Audi TT RTT 400 RS MTM, Motoren-Technik-Mayer, always impress us with the power of their modified models. After they had a little "fun" with the new Audi TT they came up with a 421 hp beast, the MTM Audi TT RTT 400 RS. After the mostly aesthetically modified MTM RS4 they created the MTM Audi TT RTT 400 RS to set a new world record. MTM Audi TT RTT 400 RS 400audimtmrtt in Public bookmarkswith 400audiautoautomotivecarscustommtmrsrtttttuning