As the mid-Fifties approached in the United Kingdom the mood of post-war austerity had all but faded, replaced by an atmosphere of optimism.
T
he public had more money to spend and they were spending some of it on cars, and certainly were not on the lookout the rounded drab designs of the immediate postwar year.
The Cresta E was almost a complete copy of the Velox EIP itself a clone of the Wyvern EIX, although other both the later models cam fitted with a much more powerful 2262cc-engine. The Cresta E was the top of the range, fitted with a host of luxurious accessories that were only available as options in the Velox and Wyvern versions. Another profitable habit that had been developed and Vauxhall's plant at Luton was to release a new series of an existing model with the previous model's engine. In this case Vauxhall continued with their 2275 cc engine, although increasing the power output increased to 58 bhp (43 kW) Two years after its release the Cresta’s grille underwent a facelift adding a SA chrome plated pressing with slightly fewer slats coming in place of the unattractive diecast metal grille. The final update was to the US-style red units incorporated into the brake/tail light lens only the previous year and replacing them with separate amber rear flashing indicator lights. A These With the arrival of the Cresta PA in October of 1957, Vauxhall phased out in one swoop, the Vauxhall Cresta E,Velox EIP and the Wyvern EIX. Together these models had driven Vauxhall forward in the early to mid-Fifties, selling a total of 570,000 units. 
The only cosmetic changes between the two models included a different grille, a two-tone color scheme (a three-tone scheme would be available from late 1955), whitewall tires, leather upholstery and a heater as standard, plus a re-designed fascia with circular instruments. 
As had become a regular feature at Vauxhall the Velox EIP’s body design was shared with not only the Cresta PA but also the less powerful 4-cylinder-engined Wyvern saloon. 
The following year, the word came down from Detroit that it looked like the time was right to give the Velox EIP another few upgrades including increasing the size of the rear window, increasingly the diameter of the grille slats with dramatic effect, fitting wind-up windows.
dditional upgrades that the developed EIP was until production wound down on the model in October 1957 were electrically operated windscreen wipers, and a new speedometer, once again based on the US 'magic ribbon' design. I
were all the changes that were to be made in the with the model being replaced by the Velox PA.
