This 2011 Audi S5 Quattro Coupe, previously a fun toy, is being sold as-is due to a knocking noise from the engine, requiring a rebuild or new motor. Despite the engine issue, it comes with numerous recent upgrades including a new paint job, ceramic brakes, O2 sensors, catalytic converters, high pressure fuel pumps, wheel hub assembly, tie rod, control arms, fuel injectors, thermostat housing, cold air intake, and a Stage one pops and bangs tune. The car also features 5% tint all around, 15% on the windshield, racing spark plugs, new coil packs, mid muffler delete, and four brand new tires.