Ferrari SF90 Stradale

The Ferrari SF90 represents one of the most transformative moments in the history of the Maranello manufacturer. Launched in 2019, it is not just another high-performance supercar, but a technological watershed that redefines the brand's future and sets new standards for the entire automotive industry. This report details the history, engineering, and different versions of this iconic model, exploring how Ferrari combined its rich racing heritage with the technology of the future.

The Meaning of the Name: Heritage and Celebration

The name of a Ferrari car is never chosen at random, and the SF90's is loaded with symbolism. The acronym "SF" stands for "Scuderia Ferrari", the brand's legendary racing team, while the number "90" celebrates the 90th anniversary of its founding by Enzo Ferrari in 1929. The suffix "Stradale", which means "road" in Italian, serves to differentiate this mass-produced model from its direct inspiration: the 2019 season Formula 1 car, also called SF90.

This naming choice was a brilliant strategic maneuver. Ferrari was about to introduce the most radical technology in one of its production cars: a plug-in hybrid (PHEV) system combined with all-wheel drive, a first for a mid-engine sports car from the brand. Historically, Ferrari's customer base values mechanical purity and tradition, especially naturally aspirated engines. Such a drastic change could meet resistance. By naming the car after the F1 team and celebrating the Scuderia's anniversary, Ferrari used its most powerful brand asset – its racing heritage – to validate and legitimize the new technology. The implicit message was clear: hybridization was not a deviation from Ferrari's identity, but rather the latest manifestation of its competitive spirit, transferred directly from the track to the streets.

The Turning Point: The First Series PHEV Supercar

The SF90 Stradale marked a paradigm shift for Ferrari by becoming its first series-production plug-in hybrid vehicle. Even more significantly, for the first time in the brand's history, a V8-powered car assumed the position of the top-of-the-range model in terms of performance, surpassing the traditional V12s. With a combined output of 1000 cv (cheval vapeur, or horsepower), the SF90 not only set a new performance standard for Ferrari but for the entire sports car sector, proving that electrification could be a tool for extreme performance.

The SF90's propulsion system is an engineering masterpiece that harmoniously integrates a V8 combustion engine with three electric motors, creating one of the most complex and powerful powertrains ever put into a street car.

The Combustion Engine: The Apex of the Ferrari V8

At the center of the SF90 is an evolution of Ferrari's award-winning F154 engine. It is a 4.0-liter (3990 cm³) V8 with two turbochargers, mounted in a mid-rear longitudinal position. On its own, this combustion engine generates an impressive 780 cv (769 hp) at 7,500 rpm and 800 Nm (81.6 kgfm) of torque at 6,000 rpm, making it the most powerful V8 ever produced by Ferrari for a road car up to that point.

To achieve these numbers, Maranello's engineers completely redesigned the intake and exhaust systems. The cylinder heads were narrowed, new high-pressure fuel injectors (350 bar) were installed, and the entire engine assembly was mounted 50 mm lower in the chassis to optimize the center of gravity. The exhaust manifold is made of Inconel, a highly heat-resistant and very light nickel-chromium superalloy, a material derived directly from Formula 1.

The Electrical System: Power and Intelligence

Complementing the V8, the SF90 has three electric motors that together add 220 cv (162 kW) to the system. The distribution is as follows:

• Two motors on the front axle: One for each wheel, allowing all-wheel drive and torque vectoring.
• One motor on the rear axle: Positioned between the V8 engine and the gearbox. This motor is known as MGUK (Motor Generator Unit, Kinetic), a name and technology inherited directly from Formula 1, which assists in power delivery and energy recovery.

Power for these motors is supplied by a high-performance lithium-ion battery with a capacity of 7.9 kWh. This battery allows the SF90 to have a pure electric range of up to 25 km, with a maximum speed of 135 km/h using only the electric motors.

Combined Performance and Transmission

The synergy between the combustion engine and the three electric motors results in a total combined output of 1000 cv (986 hp). The combined torque of the system is 800 Nm, with the V8 engine being the main contributor.

All this power is managed by a new 8-speed dual-clutch gearbox (F1 DCT) developed by Magna. This transmission is 10 kg lighter and more compact than the previous 7-speed used in other Ferrari models. One of its most notable features is the absence of a dedicated reverse gear.

This absence is not a flaw, but rather the result of causal integration engineering. The decision to use two electric motors on the front axle was not just to add power or create all-wheel drive; it was a choice that generated a cascade of benefits. By delegating the reverse gear function to the front electric motors, engineers were able to eliminate the heavy and complex reverse mechanism from the main gearbox. This resulted in a lighter and more compact transmission, which in turn allowed the entire powertrain assembly to be mounted lower in the chassis, contributing to a lower center of gravity and thereby improving the vehicle's dynamics. Electric all-wheel drive, therefore, is not just a performance system, but a key piece in a chain of engineering decisions that optimizes the car's weight, layout, and agility in an integrated way.

Driving Modes (eManettino) and Vehicle Dynamics

To manage the complexity of the hybrid powertrain, Ferrari introduced the eManettino, an additional selector on the steering wheel with four driving modes:

• eDrive: 100% electric mode. The V8 engine remains off, and the car operates with front-wheel drive, ideal for quiet urban use.
• Hybrid: The car's default mode. The control logic autonomously decides when to use the combustion engine, the electric motors, or a combination of both to optimize efficiency.
• Performance: Keeps the V8 engine always on. The priority here is charging the battery, ensuring that maximum power is always available instantly.
• Qualify: Unleashes the full 1000 cv potential. All motors work at their maximum capacity to deliver absolute performance, ideal for fast laps on a circuit.

Vehicle dynamics are enhanced by the on-demand all-wheel drive (e4WD). The front motors enable the RAC-e (electronic rotational axis control / Regulator of Cornering Angle, Electric) system, which performs torque vectoring precisely, independently controlling the power sent to the inner and outer wheel in a corner. This drastically improves traction coming out of corners and makes the car incredibly agile. The entire system is managed by the eSSC (electronic Side Slip Control), which monitors and adjusts the vehicle's stability in real time.

The coupe version, the SF90 Stradale, was the first model in the family to be presented, establishing the foundations of design, aerodynamics, and performance that would define the entire line.

Design and Active Aerodynamics

The design of the SF90 Stradale adopts a "cab-forward" approach, which shifts the cockpit forward to optimize airflow over the bodywork. The proportions have been completely revised compared to Ferrari's previous mid-rear-engined berlinettas, resulting in a lower and more aggressive silhouette, with the rear dominated by high-mounted exhaust pipes.

The most innovative aerodynamic element is the "shut-off Gurney", a patented active system at the rear. Instead of a conventional wing that rises, a movable section of the bodywork lowers to expose a Gurney flap, which drastically alters the airflow. The system operates in two modes:

• Low Drag: At high speeds and in a straight line, the movable section remains aligned with the bodywork, minimizing forward resistance and allowing the car to reach its top speed.
• High Downforce: During braking and cornering, the section lowers, creating an overpressure zone that generates up to 390 kg of downforce at 250 km/h.

This system represents a philosophy of "aerodynamics on demand". Traditional supercars face a dilemma: a large fixed wing generates downforce, but also creates constant drag, which hinders top speed. The SF90's shut-off Gurney is a smarter and faster solution. It allows the car to maintain a "clean" aerodynamic profile most of the time, optimizing its top speed of 340 km/h, and only generates massive downforce the instant the car's dynamics require more grip.

Specifications and Performance

The performance numbers of the SF90 Stradale are impressive:

• Acceleration: 0 to 100 km/h in 2.5 seconds and 0 to 200 km/h in 6.7 seconds. Independent tests conducted by specialized publications recorded even faster times, such as 0 to 60 mph (96 km/h) in just 2.0 seconds, a record for a production car at the time.
• Top Speed: 340 km/h (211 mph).
• Dimensions: Length of 4710 mm, width of 1972 mm, and height of 1186 mm.
• Weight: The dry weight is 1570 kg, resulting in an excellent weight-to-power ratio of 1.57 kg/cv.

Interior: The Human-Machine Interface (HMI)

The interior of the SF90 was designed based on the "eyes on the road, hands on the wheel" philosophy derived from Ferrari's racing experience. The steering wheel is the control center, with a touchpad and haptic buttons that allow the driver to operate almost all of the car's functions without taking their hands off it. The traditional instrument panel was replaced by a single 16-inch curved HD screen, fully digital and configurable. On the center console, the automatic gear selector has a gate design that recalls Ferrari's iconic manual gearboxes, a tribute to tradition amidst so much technology.

For customers who desire the thrill of open-air driving without compromising performance, Ferrari launched the SF90 Spider, the convertible version of its hybrid hypercar.

The Retractable Hard Top (RHT)

The Spider's main feature is its Retractable Hard Top (RHT). The mechanism, a Ferrari specialty, opens or closes in just 14 seconds and can be operated with the car moving at speeds of up to 45 km/h. The system is remarkably compact, taking up only 100 liters of space, compared to the 150-200 liters of traditional systems. This was made possible thanks to a clever redesign of the separation line between the roof and the bodywork. A crucial detail for brand purists is that the design allows the V8 engine to remain visible through the glass engine cover, even when the roof is stowed.

Impact on Weight and Performance

The addition of the roof mechanism and the structural reinforcements needed to maintain chassis rigidity results in an increase in weight. The SF90 Spider has a dry weight of 1670 kg, approximately 100 kg more than the Stradale.

Despite the extra weight, the Spider's performance is virtually identical to that of the coupe. Acceleration from 0 to 100 km/h is maintained at the same 2.5 seconds, while the 0 to 200 km/h time is only slightly slower, at 7.0 seconds. Top speed remains unchanged at 340 km/h. The ability to maintain the 0-100 km/h time, even with an extra 100 kg, demonstrates that the limiting factor for initial acceleration is not power, but rather traction. The all-wheel drive system and the instantaneous torque delivery of the electric motors already push the tires to their absolute limit of grip. The 1000 cv powertrain has so much "spare" performance that it can compensate for the additional weight with no penalty off the line, a testament to the magnitude of the available force.

An Optional Package, Not a Separate Model

It is important to note that the Assetto Fiorano is not a distinct model, but rather an equipment package that enhances the car's capabilities for track use. The name is a direct homage to Ferrari's private test circuit, the Pista di Fiorano, where the brand's cars are developed and pushed to the limit.

Specific Upgrades

The Assetto Fiorano package includes a series of improvements focused on suspension, weight reduction, aerodynamics, and tires:

• Suspension: The standard adaptive dampers are replaced by Multimatic passive aluminum dampers, derived directly from Ferrari's experience in GT racing. They are optimized for track use, offering a more direct and consistent response.
• Weight Reduction: The package reduces the car's weight by about 21 to 40 kg through the extensive use of high-performance materials, such as carbon fiber (in components like doors and underbody) and titanium (in springs and the exhaust system).
• Aerodynamics: A larger carbon fiber rear spoiler is added to increase downforce and stability at high speeds.
• Tires: The car comes equipped with Michelin Pilot Sport Cup 2 tires, which feature a softer rubber compound and a tread design focused on maximizing grip on dry asphalt, although they are still homologated for street use.

Offering the Assetto Fiorano package is a strategic decision that allows Ferrari to segment its audience. The brand recognizes that the hypercar market is not homogeneous. There is the customer who desires maximum performance with comfort for daily use, who will opt for the standard SF90. And there is the "track day" enthusiast, who values lap times above all else and is willing to sacrifice the comfort of adaptive dampers for a purer, more focused connection with the car. The Assetto Fiorano package allows Ferrari to cater to these two distinct profiles with a single base model, maximizing its market appeal.

When the performance of the SF90 Stradale with the Assetto Fiorano package seemed to be the limit, Ferrari raised the bar even higher with the XX Stradale and XX Spider versions, limited-edition models that bring track performance to the streets.

The Concept: An XX Program Car for the Streets

The XX versions represent a milestone: they are the first cars from Ferrari's exclusive "XX Program" to be homologated for public road use. Historically, the XX Program offered a select group of clients extreme performance cars, not street-legal, to be used only at track events organized by Ferrari itself. The SF90 XX Stradale and the XX Spider break this barrier, bringing this philosophy of uncompromised performance to the road.

Power Increase and "Extra Boost" Logic

The hybrid powertrain was upgraded to deliver even more performance.

• Total Power: The combined output was raised to 1030 cv, an increase of 30 cv over the standard model.
• Engine Modifications: The V8 engine now produces 797 cv, thanks to polished intake and exhaust ducts, new pistons, and a higher compression ratio. The secondary air system was removed, saving 3.5 kg in engine weight.
• Extra Boost: A new software logic, inspired by Formula 1, was introduced. Called "Extra Boost", it provides an extra peak of power from the electric motors for a short period upon exiting corners, a function specifically designed to reduce lap times.

Radical Aerodynamics and Design

The look of the XX versions is unmistakably more aggressive, with modifications focused on maximizing aerodynamic performance.

• Fixed Rear Wing: The most striking design element is a large fixed rear wing, the first to appear on a street-legal Ferrari since the iconic F50 in 1995.
• Massive Downforce: The aerodynamic package was completely reworked and now generates twice the downforce of the SF90 Stradale, reaching an impressive 530 kg at 250 km/h.
• Design: The design incorporates race car elements, such as air vents (louvres) on the front and rear fenders to relieve air pressure, and a rear with a "long tail" silhouette to improve stability.

Performance and Specifications of the XX Versions

The extreme focus on track performance resulted in impressive numbers and some counter-intuitive engineering choices.

• Acceleration: The 0 to 100 km/h time was reduced to 2.3 seconds. The 0 to 200 km/h is done in 6.5 seconds by the XX Stradale and 6.7 seconds by the XX Spider.
• Top Speed: Top speed was reduced to 320 km/h, compared to the 340 km/h of the standard model.
• Dry Weight: The XX Stradale weighs 1560 kg (10 kg less than the standard Stradale), while the XX Spider weighs 1660 kg (10 kg less than the standard Spider).

The reduction in top speed illustrates the "performance paradox". Intuitively, the most extreme model should be the fastest in all aspects. However, the lower top speed is not a flaw, but a deliberate choice that reveals the car's true purpose. The fixed wing and aggressive aerodynamics were designed for a single metric: the fastest possible lap time on a circuit. The massive downforce that "glues" the car to the asphalt in corners and under braking also creates significant aerodynamic drag, which limits straight-line speed. Ferrari consciously sacrificed the "top speed" metric, which has great marketing appeal, in favor of true track performance, a clear sign that the XX line is made up of purist race cars for the street.

The production strategy for the SF90 line clearly differentiates series models from collector's special editions, solidifying the car's legacy in distinct ways.

Production Numbers: Series vs. Limited Edition

• SF90 Stradale and Spider: These are series production models, without a limited number of units. Production took place between 2019 and 2024. As of the 2025 model year, Ferrari discontinued production of the standard coupe version (Stradale), keeping only the Spider in production alongside the XX versions.
• SF90 XX Stradale: Production was strictly limited to 799 units.
• SF90 XX Spider: Production was even more exclusive, limited to 599 units.

All units of the XX versions were sold to selected customers even before production began, highlighting the huge demand for these special models.

Comparative Specifications Table

The table below consolidates the main technical specifications of all variants of the Ferrari SF90, allowing for a direct comparison.

The Legacy of the SF90

The impact of the Ferrari SF90 on the automotive industry is profound and lasting. It has conclusively proven that hybrid technology, when applied with Ferrari's philosophy, is a tool to elevate performance to never-before-seen levels, and not just a means to achieve efficiency and emissions targets.

The SF90 solidified Ferrari's transition to an electrified future, paving the way for subsequent models that also adopted hybridization, such as the 296 GTB. More importantly, it redefined what is expected of a modern hypercar. By combining overwhelming power with advanced traction systems, torque vectoring, and active aerodynamics, the SF90 made its 1000 cv surprisingly accessible and controllable, proving that maximum performance does not have to be intimidating. It is not just the car that led Ferrari into the hybrid era; it is the car that showed the world how the soul of a supercar can thrive in this new era.