AUDI has announced another raft of specification upgrades on its fleet-popular A4 range.

SE and S line models now come with a premium Bose CD stereo system as standard, while an S line Special Edition version has been launched, priced from £25,605, featuring the new 170bhp 2.0-litre TDI engine.

Until December 31, buyers can upgrade from standard to SE spec free of charge, with a further move up to S line costing £750.