The A2 (designated A3 by some sources), designed by Merzario and Simon Hadfield and based on the first A1, was ready in time for the European rounds of the 1979 season with the same engine and gearbox combination, and it had been modified into a ground effect 'wing' car.
O A2 (designado A3 por algunhas fontes), deseñado por Merzario e Simon Hadfield e en base ó primeiro A1, estivo listo a tempo para as roldas europeas da tempada 1979 coa mesma combinación de motor e caixa de cambios, e que fora modificado cunha á efecto solo.