- Combustion principle: four-stroke petrol
- Configuration: front, longitudinal; vertical
- Engine type: M 03
- Number of cylinders / arrangement: 6 / in-line
- Bore x Stroke: 76 x 115 mm
- Total displacement: 3131 cc
- Compression ratio: 5.1
- Rated output: 55 hp at 3200 rpm
- Rated torque: 14.3 mkg at 1280 rpm
- Number of valves / arrangement: 1 intake, 1 exhaust / lateral, vertical
- Valve operation: 1 lateral camshaft
- Camshaft drive: via spur gears
- Fuel system: 1 cross-draught carburettor Zenith 36 HK Mod. TD
- Fuel tank: position / capacity: in the rear / 60 l
- Frame design: U-section pressed-steel frame
- Front-wheel suspension: rigid axle
- Rear-wheel suspension: rigid axle
- Front springs: semi-elliptical springs
- Rear springs: underslung semi-elliptical springs
- Steering: worm-and-nut steering, right or left-hand
- Brake system (foot brake): mechanical, acting on front- and rear wheels
- Parking brake (hand brake): mechanical, acting on rear wheels
- Wheels: wooden-, steel- or wire-spoke wheels
- Tires: 32 x 6.00; 32 x 6.20 low pressure or 6.00-20
- Driven wheels: rear wheels
- Drivetrain: cardan shaft
- Gearing: 4-speed manual transmission
- Shifting: shift lever in centre of vehicle
- Clutch: dry multi-disc clutch
- Transmission type: change-speed gear
- Gear ratios: I. 3.85; II. 2.29; III. 1.58; IV. 1.0
- Final drive ratio: 5.80 or 5.40
- Maximum speed: 100 km/h
- Fuel consumption: 17 l
- Wheelbase: 3430 mm
- Front / rear track: 1420 / 1420 mm
- Length: 4650 mm
- Width: 1760 mm
- Height: 1920 mm
- Chassis weigth: 1250 kg
- Kerb weight: tourer: 1800 kg; pullman saloon: 1980 kg
- Gross weight: tourer: 2550 kg; pullman saloon: 2750 kg
- Units produced: a total of 3854 (Type 12/55 hp with M 03 and M 04 engines)
- Prices: chassis: RM 9,500.-
tourer (6 seats): RM 11,800.-
sedan (6 seats): RM 13,800.-
convertible (2/3 seats): RM 13,500.-
convertible (4 seats): RM 14,500.-