THE AUII Falcon has a clever firewall with a thin layer of plastic between the metal to isolate noise and vibration. Hydraulic engine mounts also aim to reduce NVH. The AUII upgrade also brings with it a dedicated LPG option on the six-cylinder Forte, Future and S with automatic transmission. The usual fuel system is completely removed, including the fuel tank, fuel lines, pump, injectors, fuel rail and charcoal canister. The usual Distance to Empty gauge and Low Fuel warning lights remain. Performance and fuel range is claimed to be almost identical to petrol-powered vehicles. The sedan's LPG capacity is 92 litres. Dedicated LPG engines are identified by a unique green rocker cover.

Cleverly, storage versatility in the sedan is no longer compromised by an LPG tank blocking the 60/40 rear seat fold-down feature.