In 1954, its first year of production, a total of 11,150 Isabellas were produced, an early indicator that commercially this would be the most successful Borgward ever. The early cars enjoyed an enthusiastic reception in the market place, but were afflicted by teething troubles that reflected a rushed development schedule. The advertised launch price of DM 7,265 was higher than that of competitor family sedans, the
Opel Rekord and
Ford Taunus, but significantly less than Mercedes-Benz was asking for their
180 model. In view of the car's spacious cabin and impressive performance, the pricing was perceived as competitive. A road test at launch reported a maximum speed of and fuel consumption of 8.4 L/100 km or 28 mpg. The testers described the modern structure of the car in some detail: they particularly liked the wide cabin with its large windows, and they commended the effectiveness of the brakes. The inclusion of a cigarette lighter and a clock also attracted favourable mention. Unlike the Mercedes 180 however, (and unlike its predecessor) the Isabella was only available with two doors. The Isabella was constructed without a separate chassis, applying the
monocoque technique which during the 1950s was becoming the norm. Like its predecessor, the car was designed with a modern
ponton,
three-box design, but the line of the Isabella was more curvaceous than that of the first Hansa, and the car’s body made greater use of chrome trim. Ground clearance was 6.9 inches. The Isabella featured a swing axle at the back: it was supported by coil springs on all four wheels. The four-cylinder 1493 cc engine had a claimed power output of , and was connected by means of a then innovative hydraulic clutch to the four-speed full synchromesh gear box. Gear changes were effected by means of a column-mounted lever. ==Variants==