Based on the open two-seat AC Ace, the Aceca was a hand-built grand tourer in the British tradition, with ash wood and steel tubing used in their construction.

[2] As with the Ace, AC used chassis numbers beginning with AE for AC-engined cars, BE for Bristol-engined ones, and RS for those equipped with the Ford unit.

[4] The front-end styling of the Ace and Aceca reportedly traces back to a design done by Pinin Farina for AC in the late 1940s.

Later Acecas feature front-wheel disc brakes (added in 1957), while all share transverse leaf spring IRS, articulated rear half-axles, worm-gear steering, an optional overdrive on 2nd, 3rd and 4th gears, curved windscreen, and leather-covered bucket seats.

[5] The in-line six Bristol engine fitted to the Aceca-Bristol was based on a design from BMW with cast iron block and aluminium cylinder head.