Audi RS5 4.2 FSI V8 | VERY LOUD! MTM Exhaust SOUND | ONBOARD REVS & TUNNEL Acceleration & Sound by turboandstance - March 5, 2019 Here we have this time, another nice post if you ask us! We definately enjoyed the sound of this awesome Audi RS5! It uses a 4.2-litre naturally aspirated V8 with 450hp and 430nm of torque. The motor isn’t a re-worked version of the old RS4’s V8, it’s actually 4/5ths of the Audi R8’s 5.2-litre V10. Leave a comment