Maserati GranCabrio M145

The Maserati GranCabrio is not just an isolated model in the timeline of the Modena manufacturer; it represents the culmination of a brand repositioning strategy initiated under Ferrari management and consolidated within the Fiat Chrysler Automobiles (FCA) group. Launched globally at the 2009 Frankfurt Motor Show and entering production in 2010, the GranCabrio — known as the GranTurismo Convertible in the North American market — was designed to fill a critical gap in Maserati's portfolio: the absence of a true four-seater convertible (full four-seater).

Historically, Maserati offered the Spyder model (based on the Coupé 4200 GT), which was strictly a two-seater car with a short wheelbase. The luxury market, however, demanded a vehicle that could transport four adults in comfort, competing directly with high-luxury British and German convertibles. The GranCabrio was the answer to this demand, maintaining the Grand Tourer (GT) philosophy that prioritizes the ability to cross continents at high speed and in absolute comfort, over pure track performance.

This report details the technical and commercial trajectory of this icon, from its conception by Pininfarina, through the golden age of naturally aspirated V8 engines, to the technological rebirth of the second generation with twin-turbo V6 engines and the revolutionary Folgore electric variant.

Design and Structural Engineering

The first generation of the GranCabrio, internally designated by the code M145, is widely celebrated as one of the purest works of automotive design of the 21st century. The project was led by the Pininfarina studio, with creative direction by Jason Castriota and Lowie Vermeersch. The central challenge was to transform the GranTurismo coupe into a convertible without destroying the harmony of the lines or compromising torsional rigidity, a common problem when removing the fixed roof from a monocoque.

The adopted solution was maintaining a long wheelbase of 2,942 mm, the largest in its category at the time. This allowed the designers to create a fluid silhouette, where the canvas roof (soft-top) organically integrated into the rear, avoiding the need for a bulky "hump" to house a retractable hardtop. The choice of the canvas roof was not just aesthetic, but technical: it weighed less and occupied less volume in the trunk when folded down, in addition to keeping the center of gravity lower compared to metal roof mechanisms.

However, the engineering of a convertible of such dimensions required massive structural reinforcements in the floor and sills to prevent chassis torsion in corners. The result was a significant weight increase. The GranCabrio registered a curb weight ranging between 1,880 kg and 1,980 kg, depending on the version, representing an addition of approximately 100 kg compared to the coupe. The weight distribution was meticulously adjusted to mitigate this increase, achieving a balance of 49% on the front axle and 51% on the rear with the roof closed (changing to 48/52 with the roof open), an ideal configuration for rear-wheel drive that favored traction when exiting corners.

Powertrain: The F136 V8 Architecture

The heart of the GranCabrio M145 experience is the V8 engine from the F136 family, developed in technical partnership with Ferrari and produced in Maranello. This powerplant is frequently cited by experts as one of the best-sounding engines in automotive history, a characteristic intentionally designed by Maserati's acoustic engineers.

Unlike the V8s used by Ferrari (which employed a flat-plane crankshaft to reach stratospheric revs), the Maserati version used a cross-plane crankshaft. This configuration balances second-order inertia forces, resulting in smoother operation with fewer vibrations — ideal for a luxury GT — and producing that characteristic deep, low rumble, which transforms into a metallic howl near the 7,500 rpm limiter.

The evolution of this engine in the GranCabrio followed three distinct phases:

• Initial Phase (4.7L V8): Launched with 440 hp (324 kW) and 490 Nm of torque.
• Sport Phase (Revised 4.7L V8): Introduced with the Sport version, power rose to 450 hp (331 kW) and 510 Nm, thanks to improvements in ECU mapping and a reduction in internal friction.
• Final Phase (Naturally Aspirated 4.7L V8): In the latest iterations (Sport and MC from 2012/2013 onwards), the engine reached its peak with 460 hp (338 kW) at 7,000 rpm and 520 Nm of torque at 4,750 rpm.

Transmission: The Myth of the "MC Shift" in the Convertible

A crucial point of technical analysis, often misunderstood, concerns the transmission. The GranTurismo coupe offered, in its sportiest versions, a single-clutch robotized manual gearbox mounted on the rear axle (transaxle), known commercially as "MC Shift". This gearbox was famous for brutal 60-millisecond shifts.

However, for the GranCabrio, Maserati opted almost exclusively for the conventional ZF 6HP26 6-speed automatic transmission with a torque converter. The reason was pragmatic: the convertible customer valued comfort and smoothness at low speeds, something the robotized gearbox could not offer without jerking. To compensate for the loss of sportiness, Maserati developed the MC Auto Shift software.

This software, present in the Sport and MC versions of the GranCabrio, drastically altered the torque converter's behavior. In "Manual-Sport" mode, the ZF gearbox was capable of holding the gear at the rev limiter without automatically shifting up, performed blips (electronic heel-and-toe) on downshifts to match revs, and reduced shift times by up to 50%. Therefore, although marketing used the MC acronym, the underlying mechanics were the reliable ZF gearbox mounted right behind the engine, not the robotized transaxle system.

The longevity of the first generation, which remained in production for almost a decade, required constant updates to keep the model competitive.

GranCabrio (Base Version) (2010 – 2014)

The inaugural version focused purely on elegance. It was equipped with the Skyhook active suspension as standard, calibrated to absorb asphalt irregularities. Visually, it distinguished itself with bumpers featuring smaller air intakes and dual oval exhaust tailpipes. Performance was competent but restrained, with 0-100 km/h in the 5.3-second range.

GranCabrio Sport (2011 – 2019)

Presented at the 2011 Geneva Motor Show, this version injected visual and dynamic aggressiveness.

• Mechanics: The engine received an update to 450 hp (later 460 hp). The exhaust system was redesigned with pneumatic valves that opened above 2,500 rpm (or immediately in Sport mode), releasing the direct sound of the V8.
• Aesthetics: The front grille lost its chrome in favor of a gloss black finish. The headlights gained black masks and the side skirts were redesigned to improve airflow.
• Dynamics: The Skyhook suspension received a sporty recalibration, becoming stiffer, and the anti-roll bars were thickened.

GranCabrio MC (Maserati Corse) (2013 – 2019)

The definitive and most extreme version. Inspired by the success of the GranTurismo MC Stradale, the GranCabrio MC brought track aesthetics to the streets.

• Aerodynamics: The car grew 48 mm in length due to the new wind tunnel-designed bumpers. The front gained a pronounced splitter and the hood received functional air vents for heat extraction and lift reduction on the front axle.
• Rear: The most striking feature is the rear bumper with an integrated diffuser and centralized, elevated exhaust tailpipes, a visual signature of the brand's race cars.
• Suspension: Unlike the Sport, many MCs left the factory with a single-rate suspension, focused purely on handling, sacrificing some comfort in the name of steering precision.
• Performance: Top speed rose to 289 km/h, with 0-100 km/h in 4.9 seconds.

Facelifts and Model-Year Updates

• 2018: A significant facelift introduced a new hexagonal front grille ("shark nose") inspired by the Alfieri concept, alongside a new 8.4-inch infotainment system compatible with Apple CarPlay and Android Auto, modernizing the aging interior.
• 2019: The final year of production saw the simplification of the range and the launch of final packages like the "Nerissimo", which eliminated all exterior chrome.

Maserati used limited series to maintain the model's appeal and celebrate historical milestones. These versions are today the most valued by collectors.

GranCabrio Fendi (2011)

A luxury collaboration with the Italian fashion house Fendi.

• Production: Strictly limited to 50 global units.
• Exclusive Details: "Grigio Fiamma Fendi" paint (dark grey with a golden iridescence), yellow "Pergamena Fendi" wood trim on the dashboard, and "Cuoio Romano" leather from Fendi's Selleria line. The double-F logo was stitched into the seats and engraved on the wheel center caps.

GranCabrio MC Centennial Edition (2014-2015)

Created to celebrate the brand's 100 years (1914-2014), this edition is considered the "holy grail" of GranCabrios.

• Specifications: Available in special tri-coat colors like Rosso Magma and Blu Inchiostro. The interior featured Poltrona Frau leather with contrasting decorative stripes on the seats, reflecting the exterior color.
• Wheels and Emblems: The wheels featured center caps with the centennial logo (a stylized medal) and matte titanium finishes.
• Rarity: Owner registry data indicates extremely low production numbers. For the right-hand drive (RHD) market, for example, it is estimated that only 29 units of the GranCabrio MC Centennial were produced, making them rarer than many contemporary supercars.

An analysis of production numbers reveals the GranCabrio's exclusivity compared to its coupe sibling. During its 12-year life cycle (2007-2019 for the complete family), the Modena factory produced a total of 40,520 units of the M145 platform.

Table 1: Production Breakdown (2007–2019)

Source: Consolidation of official data and end-of-production reports.

Market Insight: With fewer than 12,000 units produced globally over a decade, the GranCabrio maintains an average annual production of about 1,100 cars. This guarantees natural exclusivity. The rarest versions, such as the Centennial Edition and the Fendi, represent minuscule fractions of this total, with production in the tens, which sustains high resale values in the collector's market.

Production officially ended in December 2019, marking the end of the naturally aspirated V8 era in Maserati's GT line. The Viale Ciro Menotti factory then entered a renovation period for the production of the MC20.

After a four-year hiatus, the GranCabrio returned to the market in 2024. The new generation, although visually evolutionary, represents a total rupture in terms of engineering. The model abandoned the naturally aspirated V8 in favor of more efficient solutions and introduced full electrification.

Modular Platform and Design

The new generation uses a multi-energy platform, designed from the ground up to accommodate both combustion and electric powertrains without compromising interior space or design. The structure extensively utilizes aluminum and magnesium to keep the weight down, although the dimensions have grown slightly to improve habitability.

The canvas roof has been technologically enhanced: it now operates at speeds of up to 50 km/h and completes opening in just 14 seconds. Thermal and acoustic insulation has been reinforced, and the neck warmer system has become a standard feature, blowing hot air directly from the base of the headrest to allow top-down driving on cold days.

GranCabrio Trofeo: The Era of the Nettuno V6

The main combustion version, named Trofeo, adopts the "Nettuno" twin-turbo V6 engine, which debuted in the MC20 supercar. This engine is a technological showcase for Maserati, incorporating Formula 1-derived systems.

• Pre-Chamber Technology: The Nettuno engine uses a pre-chamber ignition system with twin spark plugs. This allows for extremely fast and efficient fuel combustion, generating high specific power.
• Performance: The 3.0-liter V6 delivers 542 hp (550 PS) at 6,500 rpm and 650 Nm (479 lb-ft) of torque at 3,000 rpm.
• Transmission and Traction: Power is sent to all four wheels through an intelligent all-wheel-drive (AWD) system — a first for the model, which was previously strictly rear-wheel drive — and managed by an 8-speed ZF automatic gearbox (Gen 2 8HP). The AWD system prioritizes the rear axle to maintain a sporty feel, sending torque to the front only when necessary.
• Performance Data: Acceleration from 0 to 100 km/h in 3.6 seconds, with a top speed of 316 km/h.
• Critical Sound Analysis: The replacement of the naturally aspirated V8 with the twin-turbo V6 sparked debates about the car's "soul." The Nettuno's sound is higher-pitched and more mechanical, focused on the whistle of the turbos, differing from the deep baritone of its predecessor. However, the objective performance is vastly superior.

GranCabrio Folgore: The Electric Pioneer

The Folgore variant places Maserati in a unique market position: it is the first fully electric luxury convertible available globally.

• "T-Bone" Battery Architecture: Instead of placing the batteries on a flat floor (like a "skateboard"), which would raise the seat height and compromise the sporty driving position, Maserati opted to concentrate the cells in the central tunnel and behind the rear seats, forming a "T". This allowed maintaining a low H-point (driver's hip height) and preserving the chassis dynamics of a traditional GT.
• Electrical Specifications: The system operates on 800 Volts, allowing for ultra-fast DC charging up to 270 kW. This theoretically adds 100 km of range in just 5 minutes.
• Overwhelming Power: The car utilizes three 300 kW permanent magnet motors (one front, two rear). Although the theoretical combined capacity exceeds 1,200 hp, the battery limits the maximum output to 761 hp (560 kW) in continuous mode, with peaks of 818 hp in "MaxBoost" mode. Torque reaches an impressive 1,350 Nm.
• Torque Vectoring: The two rear motors are independent, allowing precise control of torque distribution between the rear wheels (torque vectoring), improving agility in corners.
• Performance: 0 to 100 km/h in 2.8 seconds and a top speed of 290 km/h, figures that surpass even the Trofeo version.

Table 2: Technical Comparison of the M189 Generation (2024)

Source: Consolidated official technical data

Maserati has a niche presence in Brazil, officially represented by the Via Itália group. The GranCabrio, due to its price and specific configuration, has always been an extremely low-volume vehicle in the country.

Pricing and Importation Scenario

• History: During the term of the first generation, the brand-new model fluctuated between R$ 800,000 and R$ 1,200,000, depending on exchange rate variations and the import taxes in force at the time.
• 2024/2025 Projection: With the launch of the new generation, the price positioning suffered a considerable jump, aligned with the appreciation of the dollar and the embedded technology.
• The Trofeo version, with a base price in the US of approximately US$ 205,000, arrives in Brazil with price estimates exceeding R$ 2.5 million to R$ 3 million. The Folgore version (Electric), with an international price in the range of US$ 220,000, should land with values close to R$ 3 million, competing in a price range where there are practically no direct electric convertible rivals.

The trajectory of the Maserati GranCabrio illustrates the evolution of the automotive luxury concept. The First Generation (2010-2019) secured its place in history as one of the last guardians of the analog experience: a large-displacement naturally aspirated engine, operatic sound, and timeless Pininfarina design. It is a car that appeals to pure emotion and whose collectible value tends to grow as the industry moves away from internal combustion.

The Second Generation (2024-) marks Maserati's adaptation to new times. By offering both the state-of-the-art in combustion (Nettuno V6) and the vanguard of electrification (Folgore) in the same seductive bodywork, the brand proves that it is possible to keep the soul of the Grand Tourer alive, regardless of the energy source. The GranCabrio is no longer just a beautiful Italian car, but has become a high-performance technological showcase.