Hans-Juergen Abt's Allgau based ABT is renowned for its stylish Audi tuning kits.After a raft of A5, Q5 and TTs, A3 is now being kitted out too, with a styling and performance kit for Audi's LED embedded small hatch.A3 is given a very mellow going over by Hans-Juergen Abt’s technicians, with a new front spoiler insert, subtle side skirts and a faint rear wing fusing ABT embellishments with the A3’s newfangled styling details. Rolling on a selection of 18- or 19-inch ABT alloy wheels (in either high-gloss or diamond cut finish) the ABT AS3 performance kit also lowers overall ride height by 30mm, thanks to a set of in-house developed springs which feature bound and rebound adjustment.The lowered ride height and striking alloy wheel design imbue the AS3 kit with a sense of presence without being overly dramatic. Five-blade alloys are some of the better aftermarket wheels we've seen.Backing up the huge wheels and styling enhancements are a range of power upgrades for the A3's engine line-up. Custom exhaust systems (with quad pipe rear mufflers) combine with reprogrammed ECU engine operation parameters to unlock additional power from both petrol and compression ignition turbo engines.Entry level 1.4 TSI power is up from 92- to 118kW, whilst the 1.8 TSI gains 36kW to peak at 154kW. Headlining the petrol performance engine option is a 177kW rendition of the 2.0 TSI, which produces 147kW in stock form. For those who prefer their performance to be powered by a black nozzle fuel pump, ABT’s AS3 2.0 TDI kit is available in either 125- or 140kW states of tune. Keeping in check the additional performance these engine upgrades produce is a new braking system, boasting 345mm discs.