The Ford Falcon (AU) is a full-size car that was produced by Ford Australia from 1998 to 2002. It was the sixth generation Ford Falcon and also included the Ford Fairmont (AU)—the luxury-oriented model range. The AU series replaced the EL Falcon and was constructed on the (at the time) new EA169 platform which continued to harbour Falcon models until 2010 when the BF wagon was discontinued, and Ford Territory models until 2011. The AU series was replaced by the updated BA series.

The AU was the first Falcon to offer IRS (a double wishbone design on an isolated subframe). IRS was made available as a costly option on the base Forte, Fairmont and 'S' models, and standard on Fairmont Ghia, XR6 VCT and XR8 models. The updated 6-cylinder engines incorporated advanced features such as VCT on some models and a temperature sensor in the cylinder head, which detected coolant loss and allowed the car to "limp home" safely by cutting cylinders. The engine range comprised: the base Intech model producing 157 kW (211 hp), with a revised cylinder head featuring smaller valve stems, larger exhaust valves, and different rocker ratio, as well as a revised piston and longer conrod and a cast aluminium cross-bolted oil sump (with the same power output as the EL series); an "HP" version reserved to the XR6 producing 164 kW (220 hp) (thanks to: unique cylinder head; reshaped inlet port; redesigned exhaust port; ‘open’ combustion chamber shape to restrict pre-detonation from hot spot areas; unique camshaft; higher fuel pressure; recalibrated EEC V engine management system); the VCT version producing 172 kW (231 hp) for the XR6 VCT; a "Windsor" V8 producing 185 kW (248 hp) (also carried over from the EL series but without major upgrades).

Transmissions were improved for better shift feel and the auto was recalibrated to better suit the upgraded engines. The six and eight cylinder models had a 4-speed BTR M93LE and M97LE automatic transmission, respectively. The automatic XR series models had an "adaptive shift" with five shifting strategies depending on driving conditions. The manual transmission, where available, was a 5-speed T5 model.