The Alfa Romeo Stelvio Quadrifoglio, introduced in 2023 as part of the 949 facelift, represents the high-performance pinnacle of the Stelvio SUV range. Positioned as the flagship model, it distinguishes itself with a potent 2.9-liter V6 bi-turbo engine producing 520 horsepower. This variant builds upon the foundation of the Stelvio, a mid-size luxury SUV launched in 2017, and is designed to compete with performance SUVs from German manufacturers like Porsche and BMW. The “Quadrifoglio” designation, meaning “four-leaf clover” in Italian, is a historic performance badge within Alfa Romeo, signifying a commitment to motorsport-derived engineering and driving dynamics. Production began in June 2023, continuing the model’s role as a halo vehicle for the brand.
Technical Specifications
| Brand | Alfa Romeo |
| Model | Stelvio |
| Generation | Stelvio (949, facelift 2022) |
| Type (Engine) | Quadrifoglio 2.9 V6 Bi-Turbo (520 Hp) Q4 Automatic |
| Start of production | June, 2023 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption at Low speed (WLTP) | 17.5 l/100 km (13.4 US mpg, 16.1 UK mpg, 5.7 km/l) |
| Fuel consumption at Medium speed (WLTP) | 11.9 l/100 km (19.8 US mpg, 23.7 UK mpg, 8.4 km/l) |
| Fuel consumption at high speed (WLTP) | 10.1 l/100 km (23.3 US mpg, 28 UK mpg, 9.9 km/l) |
| Fuel consumption at very high speed (WLTP) | 11.2 l/100 km (21 US mpg, 25.2 UK mpg, 8.9 km/l) |
| Combined fuel consumption (WLTP) | 11.8 l/100 km (19.9 US mpg, 23.9 UK mpg, 8.5 km/l) |
| CO2 emissions (WLTP) | 267 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 3.8 sec |
| Acceleration 0 – 62 mph | 3.8 sec |
| Acceleration 0 – 60 mph | 3.6 sec |
| Maximum speed | 285 km/h (177.09 mph) |
| Emission standard | Euro 6d Final |
| Weight-to-power ratio | 3.6 kg/Hp, 281.1 Hp/tonne |
| Weight-to-torque ratio | 3.1 kg/Nm, 324.3 Nm/tonne |
| Power | 520 Hp @ 6500 rpm |
| Power per litre | 179.9 Hp/l |
| Torque | 600 Nm @ 2500 rpm (442.54 lb.-ft. @ 2500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | 670053477 |
| Engine displacement | 2891 cm3 (176.42 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 86.5 mm (3.41 in.) |
| Piston Stroke | 82 mm (3.23 in.) |
| Compression ratio | 9.31:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | BiTurbo, Intercooler |
| Engine oil capacity | 7 l (7.4 US qt | 6.16 UK qt) |
| Coolant | 11.2 l (11.83 US qt | 9.85 UK qt) |
| Kerb Weight | 1850 kg (4078.55 lbs.) |
| Fuel tank capacity | 64 l (16.91 US gal | 14.08 UK gal) |
| Length | 4701 mm (185.08 in.) |
| Width | 1955 mm (76.97 in.) |
| Width including mirrors | 2163 mm (85.16 in.) |
| Height | 1689 mm (66.5 in.) |
| Wheelbase | 2818 mm (110.94 in.) |
| Front track | 1623 mm (63.9 in.) |
| Rear (Back) track | 1675 mm (65.9 in.) |
| Minimum turning circle | 12 m (39.37 ft.) |
| Drivetrain Architecture | All wheel drive (4×4). ICE drives rear wheels, front wheels engaged via clutch. |
| Number of gears | 8 |
| Gearbox type | Automatic transmission |
| Front suspension | Double wishbone |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs, 360 mm |
| Rear brakes | Ventilated discs, 350 mm |
| Front tires | 255/45 R20 101Y |
| Rear tires | 285/40 R20 104Y |
Powertrain & Engine Architecture
The heart of the Stelvio Quadrifoglio is the 2.9-liter twin-turbocharged V6 engine, developed by Ferrari in collaboration with Alfa Romeo. This engine, designated as the 670053477 code, utilizes a 90-degree V-angle configuration for optimal balance and smoothness. It features direct fuel injection, ensuring precise fuel delivery and maximizing combustion efficiency. The twin-turbocharger setup employs a pair of scroll-twin turbochargers, minimizing turbo lag and providing a broad torque curve. The engine produces a peak output of 520 horsepower at 6,500 rpm and 600 Nm (442.54 lb-ft) of torque at 2,500 rpm. The engine is longitudinally mounted, driving all four wheels through an eight-speed automatic transmission. This transmission is specifically tuned for quick and responsive shifts, contributing to the vehicle’s overall performance. The engine also incorporates a start/stop system and a particulate filter to meet stringent emissions standards.
Driving Characteristics
The Stelvio Quadrifoglio delivers a distinctly sporty driving experience. The 520 hp engine, coupled with the all-wheel-drive Q4 system, allows for rapid acceleration – achieving 0-60 mph in approximately 3.6 seconds. The Q4 system intelligently distributes torque between the front and rear axles, optimizing traction and stability in various driving conditions. The eight-speed automatic transmission provides smooth and quick gear changes, although some drivers may prefer the more engaging experience of a manual transmission (not offered in this configuration). The steering is direct and responsive, providing excellent feedback to the driver. Compared to lower-trim Stelvio models with the 2.0-liter turbocharged four-cylinder engine, the Quadrifoglio offers a significantly more powerful and engaging driving experience, albeit with a trade-off in fuel economy.
Equipment & Trim Levels
The Quadrifoglio trim comes standard with a comprehensive suite of features. Interior appointments include leather sport seats with adjustable bolstering, carbon fiber trim accents, and aluminum paddle shifters. Standard technology includes a 12.3-inch digital instrument cluster, an 8.8-inch infotainment system with navigation, and a premium sound system. Available options include upgraded leather upholstery, a panoramic sunroof, and advanced driver-assistance systems such as adaptive cruise control and lane-keeping assist. The exterior features unique styling cues, including a quad exhaust system, aerodynamic body kit, and distinctive alloy wheels.
Chassis & Braking
The Stelvio Quadrifoglio features a performance-tuned chassis designed to handle the increased power output. The suspension utilizes a double wishbone setup at the front and an independent multi-link setup at the rear. Brakes consist of ventilated discs all around, with larger rotors (360mm front, 350mm rear) and high-performance calipers for enhanced stopping power. The vehicle is equipped with an advanced anti-lock braking system (ABS) and electronic stability control (ESC) to maintain control during hard braking and cornering.
Market Reception & Comparison
The Alfa Romeo Stelvio Quadrifoglio has received generally positive reviews from automotive critics. It is praised for its powerful engine, engaging driving dynamics, and stylish design. However, some critics have noted its relatively firm ride quality and the complexity of its infotainment system. Compared to other performance SUVs in its class, such as the Porsche Macan Turbo and BMW X3 M, the Stelvio Quadrifoglio offers a unique blend of Italian flair and performance. Fuel economy is typical for a high-performance SUV, with combined WLTP figures around 11.8 l/100 km (19.9 US mpg). Reliability has been a concern for some owners, with reports of occasional electronic glitches.
Legacy
The 2.9-liter twin-turbo V6 engine and the eight-speed automatic transmission have proven to be relatively robust, although regular maintenance is crucial. The Stelvio Quadrifoglio has established itself as a desirable performance SUV in the used car market, commanding a premium price compared to lower-trim models. Its combination of performance, style, and Italian heritage continues to appeal to enthusiasts seeking a unique and engaging driving experience. The Quadrifoglio’s impact extends beyond its sales figures, solidifying Alfa Romeo’s commitment to building high-performance vehicles.
