The Opel Kadett C 1.2 S, produced between 1973 and 1979, represented a significant entry point into the Kadett C range for European buyers. Positioned as a more economical and accessible variant, it offered basic transportation with a focus on fuel efficiency. The Kadett C, built on the GM T-platform, was a mainstay of the compact European car market, competing with vehicles like the Ford Cortina and Volkswagen Beetle. The 1.2 S trim, with its modest 60 horsepower, was aimed at drivers prioritizing affordability and practicality over outright performance. It served as a stepping stone to the more powerful Kadett C variants, such as the 1.6 and 1.8 models.
Technical Specifications
| Brand | Opel |
| Model | Kadett |
| Generation | Kadett C |
| Type (Engine) | 1.2 S (60 Hp) |
| Start of production | 1973 |
| End of production | 1979 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (combined) | 7.9 l/100 km |
| Fuel consumption (US mpg) | 29.8 US mpg |
| Fuel consumption (UK mpg) | 35.8 UK mpg |
| Fuel consumption (km/l) | 12.7 km/l |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 17.5 sec |
| Acceleration 0 – 62 mph | 17.5 sec |
| Acceleration 0 – 60 mph | 16.6 sec |
| Maximum speed | 142 km/h (88.23 mph) |
| Weight-to-power ratio | 13.1 kg/Hp |
| Weight-to-torque ratio | 8.7 kg/Nm |
| Power | 60 Hp @ 5400 rpm |
| Power per litre | 50.2 Hp/l |
| Torque | 90 Nm (66.38 lb.-ft.) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | 12S |
| 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 | 9:1 |
| 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 – minimum | 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 | 4 |
| Gearbox type | Manual transmission |
| Front brakes | Drum |
| Rear brakes | Drum |
| Tires size | 155/80 SR13 |
| Wheel rims size | 13 |
Powertrain & Engine Architecture
The heart of the Kadett C 1.2 S was the 1196 cc (72.98 cubic inches) inline-four cylinder engine, designated the 12S. 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 60 horsepower at 5400 rpm and 90 Nm (66.38 lb-ft) of torque. The engine was mounted longitudinally in the front of the vehicle, driving the rear wheels. The four-speed manual transmission was the standard offering, providing a straightforward driving experience. The 12S engine, while not particularly powerful, was known for its durability and relatively low maintenance requirements.
Driving Characteristics
The Kadett C 1.2 S offered a utilitarian driving experience. Acceleration was modest, taking approximately 17.5 seconds to reach 62 mph (100 km/h). Top speed was around 88 mph (142 km/h). The four-speed manual transmission provided adequate control, but the limited horsepower meant frequent gear changes were necessary, especially when tackling hills or overtaking. Compared to the more powerful 1.6 and 1.8 liter Kadett C models, the 1.2 S felt noticeably slower and less refined. However, its lighter weight and simpler mechanicals contributed to better fuel economy. The rear-wheel-drive configuration provided predictable handling, but lacked the sophistication of more modern front-wheel-drive systems.
Equipment & Trim Levels
The 1.2 S trim level was the entry-level offering in the Kadett C range. Standard equipment was basic, typically including cloth upholstery, vinyl floor covering, and simple steel wheels. Creature comforts were minimal, reflecting the car’s focus on affordability. Optional extras included a radio, upgraded upholstery, and a sunroof. The dashboard layout was functional and straightforward, with basic instrumentation providing essential information. The interior space was adequate for a compact sedan, comfortably accommodating five passengers.
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. Steering was by a recirculating ball system, providing a relatively direct feel. The 1.2 S variant typically featured narrower tires (155/80 SR13) compared to the higher-spec models, contributing to its lower rolling resistance and improved fuel economy.
Market Reception & Comparison
The Kadett C 1.2 S was generally well-received as an affordable and reliable family car. Critics praised its fuel efficiency and durability, but noted its lack of performance and refinement. Compared to the 1.6 and 1.8 liter Kadett C models, the 1.2 S offered significantly less power and a less engaging driving experience. However, it was considerably cheaper to purchase and operate, making it an attractive option for budget-conscious buyers. The 1.2 S also offered better fuel economy than many of its competitors, such as the Ford Cortina and Volkswagen Beetle.
Legacy
The Opel Kadett C 1.2 S, while not a performance icon, holds a place in automotive history as a practical and affordable family car of its time. The 12S engine proved to be remarkably durable, and many examples are still on the road today. In the used car market, the Kadett C 1.2 S is valued for its simplicity, reliability, and low running costs. It represents a bygone era of automotive engineering, where practicality and affordability were prioritized over luxury and performance. Its enduring appeal lies in its honest and straightforward design, making it a popular choice for classic car enthusiasts and those seeking a simple, reliable mode of transportation.
