1937 Opel Kadett K-38
The new Kadett followed the innovative Opel Olympia in adopting a chassis-less monocoque construction, suggesting that like the Vauxhall 10 introduced in 1937 by Opel's English sister-company, the Opel Kadett was designed for high volume low cost production.
From December 1937 a modified front grill signalled an upgrade. However, the 1,074cc Opel 23 PS (17 kW; 23 hp) engine and the 2,337 mm (92.0 in) wheelbase were unchanged, and it would have taken a keen eyed observer to spot the difference between the cars for 1937 and those for 1938.
The manufacturer now offered two versions of the Kadett, designated the "Kadett KJ38 and the "Kadett K38" the latter also being sold as the "Kadett Spezial". Mechanically and in terms of published performance there was little to differentiate the two, but the "Spezial" had a chrome stripe below the window line, and extra external body trim in other areas such as on the front grill. The interior of the "Spezial" was also better equipped. To the extent that the 300 Mark saving for buyers of the car reflected reduced production costs, the major difference was that the more basic "KJ38" lost the synchromous springing with which the car had been launched, and which continued to be fitted on the "Spezial". The base car instead reverted to traditional rigid axle based suspension similar to that fitted on the old Opel P4.
The base car was available only as a two door "Limousine" (sedan/saloon). Customers looking for a soft-top "Cabrio-limousine" would need to specify a "Kadett Spezial". For the first time Kadett buyers, provided they were prepared to choose a "Kadett Spezial" could also specify a four-door "Limousine" (sedan/saloon) bodied car, priced at 2,350 Marks as against 2,150 Marks for a "Spezial Cabrio-Limousine" and 2,100 Marks for a two-door "Spezial Limousine".