In August 1958, the Volvo PV544, a more modern version of the PV444, was introduced. The changes were the most extensive since the PV444 had been presented in 1944. The body was given a larger, convex windscreen together with a larger rear window to improve visibility. The interior featured a new dashboard with a padded upper half to improve interior safety. The speedometer was the "thermometer" type; a red strip showed the speed. The rear seat was remodeled to improve the level of comfort and provide space for an additional person compared to its predecessor, the PV444.
In technical terms, this model was also updated. The Volvo PV444 was (apart from in North America) only available with one engine alternative. With the arrival of the PV544, a second version was added. A 4-speed manual gearbox was also made available for the first time.
Under the skin, the PV544 was continuously updated. The major change took place in 1961, when the famous 'B18' engine was installed under the hood, at the same time as the electrical system received 12V current.