The Alfa Romeo 156 measures at between 4430 (174.41 in.) and 4441 mm (174.84 in.) in length, 1743 (68.62 in.) and 1755 mm (69.09 in.) in width, and 1415 (55.71 in.) and 1458 mm (57.4 in.) in height, depending on the variant.
Alfa Romeo 156 weighs between 1230 kg (2711.69 lbs.) and 1510 kg (3328.98 lbs.), depending on the variant.
Fuel consumption varies between 5.8 l/100 km (41 mpg) (Alfa Romeo 156 (932) 1.9 JTD (105 Hp)) and 12.1 l/100 km (19 mpg) (Alfa Romeo 156 GTA 3.2 i V6 24V (250 Hp)).
According to owners, Alfa Romeo 156 is prone to many common issues and needs often and sometimes quite expensive repairs. Some problems include failure of the front suspension, turbo issues, the engine overheating, issues with electrics.