The Opel Manta B 1.2 N, produced between 1976 and 1981, represented the entry point into the second generation of Opel’s iconic Manta coupe. Positioned as the most affordable variant within the B-series lineup, it aimed to provide accessible sporty styling and rear-wheel drive fun to a broader customer base. The 1.2 N utilized a modest 1.2-liter four-cylinder engine, making it a popular choice for first-time car buyers and those prioritizing fuel economy over outright performance. It was a key model in Opel’s strategy to offer a diverse range of Manta options, catering to different tastes and budgets within the European market.
Technical Specifications
| Brand | Opel |
| Model | Manta |
| Generation | Manta B |
| Type (Engine) | 1.2 N (55 Hp) |
| Start of production | 1976 |
| End of production | 1981 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 4 |
| Doors | 2 |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 20.5 sec |
| Acceleration 0 – 62 mph | 20.5 sec |
| Acceleration 0 – 60 mph | 19.5 sec |
| Maximum speed | 143 km/h (88.86 mph) |
| Weight-to-power ratio | 16.8 kg/Hp, 59.5 Hp/tonne |
| Weight-to-torque ratio | 11 kg/Nm, 90.8 Nm/tonne |
| Power | 55 Hp @ 5400 rpm |
| Power per litre | 46 Hp/l |
| Torque | 84 Nm @ 3400 rpm (61.96 lb.-ft. @ 3400 rpm) |
| Engine layout | Front, Longitudinal |
| 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 |
| Valvetrain | OHV |
| Kerb Weight | 925 kg (2039.28 lbs.) |
| Max. weight | 1295 kg (2854.99 lbs.) |
| Max load | 370 kg (815.71 lbs.) |
| Trunk (boot) space – maximum | 490 l (17.3 cu. ft.) |
| Fuel tank capacity | 50 l (13.21 US gal | 11 UK gal) |
| Permitted trailer load with brakes (12%) | 1000 kg (2204.62 lbs.) |
| Permitted trailer load without brakes | 485 kg (1069.24 lbs.) |
| Length | 4445 mm (175 in.) |
| Width | 1670 mm (65.75 in.) |
| Height | 1330 mm (52.36 in.) |
| Wheelbase | 2518 mm (99.13 in.) |
| Front track | 1375 mm (54.13 in.) |
| Rear (Back) track | 1375 mm (54.13 in.) |
| Minimum turning circle | 10.5 m (34.45 ft.) |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears and type of gearbox | 4 gears, manual transmission |
| Front brakes | Disc |
| Rear brakes | Drum |
Powertrain & Engine Architecture
The heart of the Manta B 1.2 N was the 1196cc inline-four cylinder engine, designated as the 12N. This engine, a relatively simple design, featured a single overhead valve (OHV) valvetrain and a two-barrel carburetor for fuel delivery. The engine’s modest output of 55 horsepower at 5400 rpm and 84 Nm (62 lb-ft) of torque at 3400 rpm was a result of its small displacement and conservative tuning. The engine was mounted longitudinally in the front of the vehicle, driving the rear wheels. The transmission was a standard four-speed manual gearbox, chosen for its simplicity and cost-effectiveness. While an automatic transmission was offered on higher-spec Manta B models, it wasn’t available with the 1.2 N engine.
Driving Characteristics
The 1.2 N Manta B offered a distinctly different driving experience compared to its more powerful siblings, such as the 1.9 or 2.0-liter versions. Acceleration was leisurely, taking over 20 seconds to reach 60 mph. The focus wasn’t on speed, but on usability and fuel efficiency. The four-speed manual transmission required frequent shifting to maintain momentum, especially when tackling hills or overtaking. The rear-wheel drive layout provided a degree of handling balance, but the relatively narrow tires and basic suspension setup limited grip. Compared to the more potent Mantas, the 1.2 N felt less refined and more demanding to drive quickly, but it was still a fun and engaging car for everyday use.
Equipment & Trim Levels
The 1.2 N Manta B was typically equipped with basic, functional trim. Standard features included cloth upholstery, vinyl floor covering, and a simple dashboard layout. Power steering, a common option on higher trims, was generally not available on the base 1.2 N. Optional extras included a radio, upgraded interior trim, and a sunroof. The exterior styling was consistent across the Manta B range, featuring the distinctive coupe silhouette and prominent front grille. However, the 1.2 N often lacked the chrome trim and alloy wheels found on more luxurious models.
Chassis & Braking
The Manta B 1.2 N utilized a relatively simple chassis design. The front suspension consisted of independent coil springs and wishbones, while the rear suspension employed a solid axle with leaf springs. This setup provided a comfortable ride, but wasn’t particularly sporty. The braking system featured disc brakes on the front wheels and drum brakes on the rear. The brakes were adequate for the car’s performance, but lacked the stopping power of the larger brakes found on higher-spec models. The relatively light weight of the 1.2 N helped to offset the limitations of the braking system.
Market Reception & Comparison
The Opel Manta B 1.2 N was generally well-received as an affordable and stylish coupe. Critics acknowledged its modest performance, but praised its fuel economy and practicality. It was often compared to other entry-level coupes of the era, such as the Ford Taunus and the Volkswagen Scirocco. The 1.2 N offered a more distinctive and sporty image than many of its competitors, but lacked the refinement and performance of some of the more expensive options. In terms of reliability, the 1.2 N engine proved to be reasonably durable, although regular maintenance was essential to prevent issues with the carburetor and valve train.
Legacy
Today, the Opel Manta B 1.2 N is a relatively rare and sought-after classic car. While not as highly valued as the more powerful Manta variants, it represents an accessible entry point into the world of classic Opel ownership. The 1.2 N engine, while not known for its performance, is relatively simple to maintain and repair. The car’s enduring appeal lies in its distinctive styling, rear-wheel drive layout, and nostalgic charm. Well-maintained examples are increasingly collectible, appealing to enthusiasts who appreciate the Manta’s unique character and historical significance. The 1.2 N serves as a reminder of a time when coupes were affordable and accessible to a wider range of drivers.
