For 1958 the DBR2s were upgraded to 3.9 Litre engines. DBR2/1 won both the Sussex Trophy at Goodwood and the British Empire Trophy at Oulton Park, driven by Stirling Moss in both wins.
After finishing 2nd and 3rd at Spa, Aston Martin decided to concentrate on the DBR1 for Europe, while both DBR2s were upgraded to the 4.2 Litre engines and transferred to America where they could compete easier with larger engine capacities. George Constantine drove DBR2/1 to victories at Lime Rock and Marlborough before the end of the season.