The Opel Kadett C 1.2, producing 52 horsepower with an automatic transmission, was a variant of the Kadett C produced between 1973 and 1977. Positioned as the entry-level offering within the Kadett C range, it aimed to provide affordable and practical transportation for families. This model occupied a unique space, offering the convenience of an automatic gearbox in a typically manual-transmission segment, albeit with a significant performance compromise. The Kadett C itself was a significant model for Opel, representing a modernization of the Kadett line and a step towards more contemporary automotive design. It was built on the Rüsselsheim platform, shared with other GM vehicles of the era.
Technical Specifications
| Brand | Opel |
| Model | Kadett |
| Generation | Kadett C |
| Type (Engine) | 1.2 (52 Hp) Automatic |
| Start of production | 1973 |
| End of production | 1977 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (combined) | 8.5 l/100 km |
| Fuel consumption (US mpg) | 27.7 |
| Fuel consumption (UK mpg) | 33.2 |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 21.5 sec |
| Acceleration 0 – 62 mph | 21.5 sec |
| Acceleration 0 – 60 mph | 20.4 sec |
| Maximum speed | 130 km/h (80.78 mph) |
| Weight-to-power ratio | 15.1 kg/Hp |
| Weight-to-torque ratio | 9.8 kg/Nm |
| Power | 52 Hp @ 5600 rpm |
| Power per litre | 43.5 Hp/l |
| Torque | 80 Nm (59 lb.-ft.) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | 12N |
| Engine displacement | 1196 cm3 (72.98 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 79 mm (3.11 in.) |
| Piston Stroke | 61 mm (2.4 in.) |
| Compression ratio | 7.8:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Carburettor |
| Engine aspiration | Naturally aspirated |
| Engine oil capacity | 2.8 l (2.96 US qt | 2.46 UK qt) |
| Coolant capacity | 4.7 l (4.97 US qt | 4.14 UK qt) |
| Kerb Weight | 785 kg (1730.63 lbs.) |
| Max. weight | 1205 kg (2656.57 lbs.) |
| Max load | 420 kg (925.94 lbs.) |
| Trunk (boot) space – maximum | 420 l (14.83 cu. ft.) |
| Fuel tank capacity | 43 l (11.36 US gal | 9.46 UK gal) |
| Max. roof load | 60 kg (132.28 lbs.) |
| Permitted trailer load with brakes (12%) | 800 kg (1763.7 lbs.) |
| Permitted trailer load without brakes | 430 kg (947.99 lbs.) |
| Length | 4124 mm (162.36 in.) |
| Width | 1580 mm (62.2 in.) |
| Height | 1375 mm (54.13 in.) |
| Wheelbase | 2395 mm (94.29 in.) |
| Front track | 1300 mm (51.18 in.) |
| Rear track | 1299 mm (51.14 in.) |
| Minimum turning circle | 9.2 m (30.18 ft.) |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears and type of gearbox | 3 gears, automatic transmission |
| Front brakes | Drum |
| Rear brakes | Drum |
| Tires size | 155 SR13 |
| Wheel rims size | 13 |
Powertrain & Engine Architecture
The heart of the Kadett C 1.2 Automatic was the 12N engine, a 1.2-liter (1196 cc) inline-four cylinder unit. This engine featured a relatively simple design, utilizing a single overhead camshaft and two valves per cylinder. Fuel delivery was managed by a carburetor, a common feature for vehicles of this era, prioritizing simplicity and cost-effectiveness over the more advanced fuel injection systems. The engine produced 52 horsepower at 5600 rpm and 80 Nm (59 lb-ft) of torque. The engine was mounted longitudinally in the front of the vehicle, driving the rear wheels. The automatic transmission was a three-speed unit, offering a level of convenience not typically found in this class of vehicle. However, it was a relatively basic automatic, lacking the sophistication of later designs.
Driving Characteristics
The Kadett C 1.2 Automatic was not known for its performance. The combination of a small-displacement engine and a relatively inefficient automatic transmission resulted in sluggish acceleration. Zero to 60 mph took approximately 20.4 seconds, and the top speed was limited to around 81 mph. The three-speed automatic transmission had widely spaced gear ratios, contributing to a lack of responsiveness. Compared to the manual transmission versions of the Kadett C, or even the larger-engined models, the 1.2 Automatic felt significantly underpowered. However, it offered a smooth and comfortable driving experience, particularly in urban environments, where the convenience of the automatic transmission outweighed the performance deficit.
Equipment & Trim Levels
The 1.2 Automatic trim level was generally considered the base model. Standard features included cloth upholstery, basic instrumentation, and a four-spoke steering wheel. Optional extras included a radio, upgraded interior trim, and a sunroof. The interior was functional and utilitarian, reflecting the car’s affordable positioning. The dashboard layout was simple and straightforward, with easy-to-read gauges. The exterior trim was minimal, with chrome bumpers and basic hubcaps.
Chassis & Braking
The Kadett C featured a conventional chassis design, with a separate body-on-frame construction. The suspension consisted of independent front suspension with coil springs and a rigid rear axle with leaf springs. The braking system utilized drum brakes on all four wheels, which were adequate for the car’s weight and performance but lacked the stopping power of disc brakes. The steering was a recirculating ball system, providing a relatively heavy but precise feel. The 1.2 Automatic variant, due to its lower power output, often featured slightly softer suspension settings compared to higher-performance models.
Market Reception & Comparison
The Kadett C 1.2 Automatic received mixed reviews. Critics acknowledged the convenience of the automatic transmission but criticized the car’s lack of performance. Fuel economy was reasonable for the time, at around 27.7 US mpg. Compared to other Kadett C variants, such as the 1.6-liter models, the 1.2 Automatic was significantly slower and less engaging to drive. However, it was more affordable and appealed to buyers who prioritized comfort and convenience over performance. The 1.9-liter diesel version offered superior fuel economy but lacked the refinement of the gasoline engine.
Legacy
The Opel Kadett C 1.2 Automatic is now a relatively rare classic car. The 12N engine, while not particularly powerful, is known for its reliability and durability. The automatic transmission, however, can be prone to wear and tear, and finding replacement parts can be challenging. Today, these cars are sought after by enthusiasts who appreciate their simplicity and affordability. The Kadett C 1.2 Automatic represents a unique chapter in Opel’s history, offering a glimpse into a time when automatic transmissions were a luxury feature in the compact car segment. Well-maintained examples are becoming increasingly collectible, offering a nostalgic driving experience and a connection to a bygone era of automotive engineering.
