The Toyota Corolla II 2-door sedan, designated as the E20 series, was produced between 1970 and 1974. This generation represented a significant step forward for Toyota, offering a more refined and spacious vehicle compared to its predecessor. Within the E20 lineup, the 1200 variant equipped with a 73 horsepower engine and an automatic transmission occupied the entry-level position, aimed at buyers seeking affordable and reliable transportation with the convenience of an automatic gearbox. It was positioned below the more powerful 1600 GT models and served as a more accessible alternative to the standard manual transmission versions.
The 1.2L 73 hp Automatic: Positioning and Market Role
The 1.2L (1166cc) 73 hp automatic Corolla II was designed to appeal to a broad demographic, particularly those prioritizing ease of use and fuel efficiency. In the early 1970s, automatic transmissions were still considered a luxury feature, and offering one in the base model broadened the Corolla’s appeal. This variant was specifically targeted towards urban commuters and families who valued convenience over outright performance. It provided a comfortable and practical driving experience, albeit with modest acceleration capabilities. Compared to the manual transmission 1200, the automatic version offered a smoother, less engaging drive, while the larger 1600cc engines provided significantly more power for those willing to pay the premium.
Powertrain & Engine Architecture
The heart of the Corolla II 1200 Automatic was the 3K-D engine, a 1.2-liter inline-four cylinder gasoline engine. This engine featured a relatively simple overhead valve (OHV) valvetrain with two valves per cylinder. The 3K-D utilized a single carburetor for fuel delivery, a common practice for engines of this era. The engine produced 73 horsepower at 6,600 rpm and 94 Nm (69.33 lb-ft) of torque at 4,200 rpm. The engine’s bore and stroke measured 75mm x 66mm, resulting in a compression ratio of 10:1. The engine was mounted longitudinally in the front of the vehicle.
The automatic transmission was a 3-speed unit. While specific details regarding the transmission’s internal construction are scarce, it was a conventional hydraulic automatic, offering a ‘Drive’, ‘Neutral’, and ‘Reverse’ selection. The gear ratios were optimized for fuel economy and smooth operation, rather than aggressive acceleration. The automatic transmission contributed to a slightly higher curb weight compared to the manual transmission models.
Driving Characteristics
The driving experience in the Corolla II 1200 Automatic was characterized by its smoothness and ease of operation. Acceleration was modest, with the 73 hp engine and 3-speed automatic transmission resulting in a 0-60 mph time estimated to be around 16-18 seconds. The automatic transmission’s shift points were calibrated for fuel efficiency, meaning the engine often operated at lower rpm ranges. This resulted in a relaxed driving experience, but also limited the car’s ability to accelerate quickly or maintain high speeds on inclines. Compared to the manual transmission versions, the automatic felt noticeably slower, particularly during overtaking maneuvers. The rear-wheel-drive configuration provided predictable handling, but the relatively narrow tires and basic suspension setup limited grip in cornering situations.
Equipment & Trim Levels
The Corolla II 1200 Automatic, as the entry-level trim, came with a fairly basic set of standard features. The interior typically featured vinyl upholstery, a simple dashboard layout with basic instrumentation (speedometer, fuel gauge, and temperature gauge), and minimal brightwork. Standard equipment included basic lighting, turn signals, and a two-spoke steering wheel. Optional extras included a radio, upgraded upholstery, and a heater. The 2-door sedan body style offered limited rear passenger space compared to the 4-door sedan or wagon variants. The overall interior design prioritized functionality and durability over luxury.
Chassis & Braking
The Corolla II 1200 Automatic utilized a relatively simple chassis design. The front suspension consisted of independent coil springs with a transverse stabilizer bar, providing a reasonable level of ride comfort. The rear suspension employed a rigid axle setup with leaf springs, which was a cost-effective solution but offered less sophisticated handling characteristics. The braking system featured disc brakes on the front wheels and drum brakes on the rear wheels. The steering system was a cone worm with recirculation balls, providing adequate steering feel but lacking the precision of more modern systems. The relatively light curb weight of 775 kg (1708.58 lbs) helped to mitigate the limitations of the braking and suspension systems.
Market Reception & Comparison
The Corolla II 1200 Automatic was generally well-received by consumers and automotive critics as a practical and affordable transportation option. While its performance was not exceptional, its fuel economy (5.1 l/100 km or 46.1 US mpg) and reliability were highly praised. Compared to other vehicles in its class, such as the Datsun 1200, the Corolla II offered a similar level of practicality and affordability. However, some critics noted that the automatic transmission detracted from the car’s overall performance and responsiveness. The 1600 GT models were often favored by enthusiasts seeking a more engaging driving experience, while the 1200 Automatic appealed to a wider audience prioritizing convenience and fuel efficiency.
Technical Specifications
| Brand | Toyota |
| Model | Corolla II |
| Generation | E20 |
| Type | 2-door Sedan |
| Engine | 1.2L Inline-4 (3K-D) |
| Engine Displacement | 1166 cm3 (71.15 cu. in.) |
| Power | 73 hp @ 6600 rpm |
| Torque | 94 Nm (69.33 lb-ft) @ 4200 rpm |
| Fuel System | Carburetor |
| Transmission | 3-speed Automatic |
| Drive Wheels | Rear Wheel Drive |
| Curb Weight | 775 kg (1708.58 lbs) |
| Fuel Consumption (Combined) | 5.1 l/100 km (46.1 US mpg) |
| Maximum Speed | 140 km/h (86.99 mph) |
| Length | 3945 mm (155.31 in) |
| Width | 1505 mm (59.25 in) |
| Height | 1375 mm (54.13 in) |
| Wheelbase | 2335 mm (91.93 in) |
Legacy
The Toyota Corolla II 1200 Automatic, while not the most powerful or sporty variant of the E20 generation, played a crucial role in establishing the Corolla’s reputation for reliability and affordability. The 3K-D engine proved to be remarkably durable, and many examples remain on the road today. The automatic transmission, while simple, was generally reliable and provided years of service. In the used car market, these models are often sought after by enthusiasts and collectors looking for a classic Japanese automobile. Their simplicity and ease of maintenance make them appealing to those interested in restoring and preserving a piece of automotive history. The 1200 Automatic represents a significant milestone in Toyota’s history, demonstrating the company’s commitment to providing practical and dependable transportation to a wide range of customers.
