Plymouth made the same mistake as sister division Dodge by gambling on much smaller 1962 cars with different styling. Because of this, Dodge remained ninth in industry production, but Plymouth had plunged from fourth to eighth.
For 1963, the full-size Bel Air received a new facelift and the overall length increased to 210.4 in. The 235.5ci I-6 was replaced with a 230ci six-cylinder as standard equipment and increased output to 140 hp.
At the end of 1962, AC's chief engineer completed a major redesign of the car's front end and was able to fit it with rack and pinion steering. The new car entered production early 1963 and was designated MKII.