The Maserati GranCabrio I Sport 4.7 V8 (450 Hp) Automatic, produced from 2011 to 2012, represents a compelling blend of Italian luxury and high-performance motoring within the GranCabrio lineage. Positioned as a performance-oriented variant of the GranCabrio, it occupied a premium space in Maserati’s convertible lineup, offering a more engaging driving experience than the standard model. This iteration builds upon the foundational GranCabrio (based on the Maserati M145 platform, sharing architecture with the GranTurismo coupe) and aimed to deliver a more visceral connection to the road while retaining the open-air enjoyment of a convertible. It was primarily marketed towards enthusiasts seeking a luxurious grand tourer with genuine sporting credentials.
Technical Specifications
| Brand | Maserati |
| Model | GranCabrio |
| Generation | GranCabrio I |
| Type (Engine) | Sport 4.7 V8 (450 Hp) Automatic |
| Start of production | 2011 |
| End of production | 2012 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Cabriolet |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 22.5 l/100 km (10.5 US mpg, 12.6 UK mpg, 4.4 km/l) |
| Fuel consumption (extra urban) | 9.8 l/100 km (24 US mpg, 28.8 UK mpg, 10.2 km/l) |
| Fuel consumption (combined) | 14.5 l/100 km (16.2 US mpg, 19.5 UK mpg, 6.9 km/l) |
| CO2 emissions | 337 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5.2 sec |
| Acceleration 0 – 62 mph | 5.2 sec |
| Acceleration 0 – 60 mph | 4.9 sec |
| Maximum speed | 285 km/h (177.09 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 4.4 kg/Hp, 227.3 Hp/tonne |
| Weight-to-torque ratio | 3.9 kg/Nm, 257.6 Nm/tonne |
| Power | 450 Hp @ 7000 rpm |
| Power per litre | 95.9 Hp/l |
| Torque | 510 Nm @ 4750 rpm (376.16 lb.-ft. @ 4750 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M145S |
| Engine displacement | 4691 cm3 (286.26 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 94 mm (3.7 in.) |
| Piston Stroke | 84.5 mm (3.33 in.) |
| Compression ratio | 11.25:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Naturally aspirated engine |
| Engine oil capacity | 9 l (9.51 US qt | 7.92 UK qt) |
| Coolant capacity | 13 l (13.74 US qt | 11.44 UK qt) |
| Kerb Weight | 1980 kg (4365.15 lbs.) |
| Trunk (boot) space (minimum) | 173 l (6.11 cu. ft.) |
| Fuel tank capacity | 75 l (19.81 US gal | 16.5 UK gal) |
| Length | 4881 mm (192.17 in.) |
| Width | 1915 mm (75.39 in.) |
| Width including mirrors | 2056 mm (80.94 in.) |
| Height | 1353 mm (53.27 in.) |
| Wheelbase | 2942 mm (115.83 in.) |
| Front track | 1586 mm (62.44 in.) |
| Rear track | 1590 mm (62.6 in.) |
| Minimum turning circle | 12.3 m (40.35 ft.) |
| Drivetrain | Rear wheel drive |
| Number of gears | 6 |
| Gearbox type | Automatic transmission |
| Front brakes | Disc |
| Rear brakes | Disc |
| Tire size | 245/35 ZR20; 285/35 ZR20 |
| Wheel rim size | 20 |
Powertrain & Engine Architecture
At the heart of the GranCabrio Sport 4.7 lies Maserati’s M145S engine, a naturally aspirated 4.7-liter V8. This engine is a significant departure from forced induction, relying on a large displacement and sophisticated engineering to deliver its power. The engine utilizes a 90-degree V8 configuration, known for its inherent balance and smooth operation. It features a direct fuel injection system, optimizing combustion efficiency and contributing to the engine’s responsive throttle characteristics. The valvetrain employs four valves per cylinder, further enhancing breathing and power output. The engine’s 450 horsepower peak is achieved at 7000 rpm, while its 376 lb-ft of torque is readily available at 4750 rpm. The engine is longitudinally mounted at the front of the vehicle, driving the rear wheels. The automatic transmission is a 6-speed unit, specifically tuned to complement the engine’s power delivery and provide smooth, yet decisive shifts. While not a dual-clutch transmission, it offers a responsive experience suitable for spirited driving.
Driving Characteristics
The 4.7 V8 paired with the 6-speed automatic delivers a distinctly grand touring experience. While not as brutally quick as some contemporary sports cars, the GranCabrio Sport offers ample power for confident overtaking and enjoyable cruising. The automatic transmission, while smooth, isn’t designed for lightning-fast shifts like a dual-clutch gearbox. However, it provides a relaxed driving experience, particularly in city traffic. The gear ratios are tuned for a balance between acceleration and fuel efficiency, with a focus on providing strong mid-range torque. Compared to the manual transmission versions, the automatic sacrifices some driver engagement but gains in ease of use. The Sport trim also included a slightly more aggressive exhaust note, enhancing the auditory experience. Compared to the base GranCabrio, the Sport model offered a more connected feel, thanks to a revised suspension setup.
Equipment & Trim Levels
The GranCabrio Sport 4.7 Automatic came standard with a generous array of features befitting a luxury grand tourer. Interior appointments included leather upholstery, power-adjustable seats, and a premium audio system. Standard exterior features included 20-inch alloy wheels, a sport-tuned suspension, and unique styling cues that differentiated it from the base GranCabrio. Optional extras included a variety of interior trim options, upgraded audio systems, and advanced driver-assistance features. The Sport trim also featured unique front and rear bumpers, side skirts, and a rear spoiler, contributing to its more aggressive appearance.
Chassis & Braking
The GranCabrio I utilizes a double-wishbone suspension setup at all four corners, providing a comfortable ride while maintaining good handling characteristics. The Sport trim featured a slightly stiffer suspension calibration compared to the standard GranCabrio, reducing body roll and improving responsiveness. Braking duties are handled by ventilated disc brakes at all four wheels, providing ample stopping power. An anti-lock braking system (ABS) is standard, enhancing safety and control. The steering system employs a rack-and-pinion setup, offering precise and responsive steering feel.
Market Reception & Comparison
The Maserati GranCabrio Sport 4.7 Automatic was generally well-received by automotive critics. It was praised for its luxurious interior, powerful engine, and engaging driving experience. However, some critics noted the relatively high fuel consumption and the somewhat dated automatic transmission compared to newer dual-clutch systems. Compared to other trims in the GranCabrio lineup, the Sport model offered a more focused driving experience, appealing to enthusiasts who prioritized performance over outright comfort. The 4.7 V8 offered a significant performance upgrade over the earlier 4.2-liter engine, while remaining more accessible than the more expensive and exclusive MC Stradale variant.
Legacy
The Maserati GranCabrio I Sport 4.7 V8 Automatic, while a relatively short-lived model, has established a reputation for reliability, particularly the engine itself. The naturally aspirated V8 is known for its durability and relatively straightforward maintenance. On the used car market, these models are sought after by enthusiasts who appreciate the combination of Italian style, performance, and open-air driving. While maintenance costs can be higher than more mainstream brands, the GranCabrio Sport offers a unique and rewarding ownership experience. The powertrain, while not the most fuel-efficient, remains a compelling choice for those seeking a classic grand touring experience.
