The Isdera Commendatore 112i 6.9 V12, produced between 1993 and 1999, represents a pinnacle of German automotive engineering and a bold statement of supercar performance. Built by Isdera, a relatively small manufacturer founded by Eberhard Schultz, the Commendatore was intended to revive the spirit of the classic Mercedes-Benz 300SL Gullwing, a car Schultz had previously restored and modified. The 112i designation refers to the engine variant, a massive 6.9-liter V12, and signifies Isdera’s commitment to creating a truly exceptional grand touring machine. The Commendatore was never intended for mass production; each vehicle was largely hand-built, making it an exceptionally rare and exclusive automobile.
Technical Specifications
| Brand | Isdera |
| Model | Commendatore |
| Generation | Commendatore |
| Type (Engine) | 112i 6.9 V12 (548 Hp) |
| Start of production | 1993 |
| End of production | 1999 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 2 |
| Doors | 2 |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 4.1 sec |
| Acceleration 0 – 62 mph | 4.1 sec |
| Acceleration 0 – 60 mph | 3.9 sec |
| Acceleration 0 – 200 km/h | 11.9 sec |
| Weight-to-power ratio | 2.7 kg/Hp, 375.3 Hp/tonne |
| Weight-to-torque ratio | 2.1 kg/Nm, 484.2 Nm/tonne |
| Power | 548 Hp |
| Power per litre | 79.4 Hp/l |
| Torque | 707 Nm @ 3800 rpm (521.46 lb.-ft. @ 3800 rpm) |
| Engine layout | Middle, Longitudinal |
| Engine Model/Code | M 297 |
| Engine displacement | 6900 cm3 (421.06 cu. in.) |
| Number of cylinders | 12 |
| Engine configuration | V-engine |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Kerb Weight | 1460 kg (3218.75 lbs.) |
| Length | 4665 mm (183.66 in.) |
| Width | 1875 mm (73.82 in.) |
| Height | 1040 mm (40.94 in.) |
| Drivetrain Architecture | Rear wheel drive |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
Powertrain & Engine Architecture
The heart of the Isdera Commendatore 112i is the M 297 engine, a 6.9-liter naturally aspirated V12. This engine wasn’t designed in-house by Isdera; it was sourced from Mercedes-Benz, specifically a modified version of the M120 engine used in the flagship 600SL and S-Class models of the era. However, Isdera extensively reworked the engine, increasing its displacement and significantly boosting its output to 548 horsepower. The engine utilizes a multi-port fuel injection system, a common setup for high-performance engines of the time, and features a robust valvetrain designed to withstand the stresses of high-revving operation. The engine is mounted longitudinally in a mid-engine configuration, contributing to the car’s balanced handling characteristics. Power is transmitted to the rear wheels through a five-speed manual transmission, the only transmission option available. The choice of a manual gearbox underscored the Commendatore’s focus on driver engagement and performance.
Driving Characteristics
The Isdera Commendatore 112i delivers a driving experience that is both exhilarating and demanding. The large-displacement V12 provides a substantial amount of torque throughout the rev range, resulting in strong acceleration in any gear. The 0-60 mph sprint is dispatched in approximately 3.9 seconds, and the car can reach a top speed exceeding 200 mph. The mid-engine layout and relatively lightweight construction (for a V12-powered grand tourer) contribute to nimble handling, although the car’s size requires respect and precision from the driver. The five-speed manual transmission requires a skilled hand to operate effectively, but it allows for complete control over the engine’s power. Compared to more modern supercars, the Commendatore lacks electronic driver aids such as traction control or stability control, further emphasizing the importance of driver skill. The gear ratios are tuned for acceleration, prioritizing responsiveness over outright fuel economy.
Equipment & Trim Levels
Given the limited production run and bespoke nature of the Isdera Commendatore, trim levels were largely dictated by individual customer preferences. The interior was lavishly appointed with high-quality leather upholstery, often customized to the owner’s specifications. Standard features included power windows, power steering, and air conditioning. The dashboard layout was relatively simple and functional, prioritizing readability and ease of use. Optional extras included a premium sound system, upgraded leather trim, and custom paint finishes. The Commendatore was not designed to be a technologically advanced car; its focus was on providing a luxurious and engaging driving experience rather than showcasing the latest gadgets.
Chassis & Braking
The Isdera Commendatore features a steel space frame chassis, providing a rigid and lightweight foundation for the vehicle. The suspension consists of independent double wishbones at all four corners, with coil springs and adjustable dampers. This setup provides a good balance between ride comfort and handling performance. Braking duties are handled by ventilated disc brakes at all four wheels, providing ample stopping power. The braking system is not equipped with ABS, reflecting the car’s age and design philosophy. The car’s weight distribution is carefully optimized to enhance handling balance, with the engine positioned behind the driver and the fuel tank located centrally.
Market Reception & Comparison
The Isdera Commendatore 112i was never a mainstream success, due to its high price and limited availability. However, it garnered significant attention from automotive enthusiasts and collectors, who appreciated its unique design, powerful engine, and hand-built quality. Critics praised the car’s performance and handling, but also noted its lack of modern amenities and its demanding driving characteristics. Compared to contemporary supercars such as the Porsche 911 Turbo and the Ferrari 360 Modena, the Commendatore offered a more traditional grand touring experience, emphasizing luxury and driver engagement over outright speed and technological sophistication. Fuel economy was predictably poor, given the engine’s size and power output, and maintenance costs were substantial due to the car’s complex mechanicals.
Legacy
The Isdera Commendatore 112i remains a highly sought-after collector’s item today. Its rarity, unique design, and powerful engine ensure its continued appeal to automotive enthusiasts. The M 297 V12 engine, while complex, has proven to be relatively reliable when properly maintained. However, sourcing parts can be challenging due to the car’s limited production run. The Commendatore represents a fascinating chapter in German automotive history, a testament to the vision and craftsmanship of Eberhard Schultz and his team. It stands as a unique and compelling alternative to the more mainstream supercars of its era, a true automotive icon.
