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THE ITALIAN COACHBUILDER SITE

Alfa Romeo 6C 1750 GTC Castagna

1931Coachwork by Castagna

THE VEHICLE AT A GLANCE

Model dossier

Manufacturer
Alfa Romeo
Base model
6C 1750 GTC
Coachbuilder
Castagna
Production period
1931
Body style
Cabriolet
Engine
Supercharged Inline-6
Type
Limited
Displacement
1,752 cc

THE PEOPLE BEHIND THE CAR

Coachbuilding, design & conversions

PRICE & SALES RECORD

Vehicle value

Original price
Not documented
Latest recorded sale
Not documented

01 / THE STORY

History & context

The Alfa Romeo 6C 1750 GTC Castagna is a remarkable fusion of performance and luxury, a true testament to Alfa Romeo’s legacy in both motorsport and high-end automobile design. Originally born out of the genius of Vittorio Jano, the 6C 1750 played a pivotal role in cementing Alfa Romeo’s reputation in the racing world, with victories in the prestigious Mille Miglia from 1928 to 1930. The 6C 1750 GTC marks the final evolution of this iconic sports car, transitioning into a refined touring version that catered to a select group of connoisseurs who appreciated its potential for both exhilarating performance and comfortable touring. The GTC model is notable for its extended wheelbase, which was lengthened by 6 cm compared to earlier iterations. This modification enhanced the car’s stability, making it more suited to long-distance driving without compromising its agility. The GTC retains the mechanical excellence of the 8C 2300, with shared components such as the gear lever and front axle, while also benefiting from improved braking systems for better handling and safety. The real standout feature of the 6C 1750 GTC Castagna is its stunning bodywork, masterfully crafted by Carrozzeria Castagna Milano. This coachbuilder, known for its elegant designs, created a body that balanced the car’s sporting heritage with the sophistication of a luxury tourer. The car’s distinctive capote (hood) and luggage rack are both functional and beautifully detailed, adding to the overall aesthetic appeal. Perhaps the most striking feature is its unique pearl-colored varnish, a combination of pearl dust and crushed shells that results in a luminous, almost otherworldly finish. This bespoke paintwork gives the car a rare, ethereal quality that elevates it beyond just a mode of transportation to an automotive masterpiece. The Alfa Romeo 6C 1750 GTC Castagna has earned numerous accolades, including the “Prix d’Elégance” at the 2001 Louis Vuitton Classic, further solidifying its place among the most exquisite cars of its era. Today, it resides in the prestigious Museo Nicolis Collection, where it continues to captivate car enthusiasts and collectors alike, showcasing the enduring beauty and engineering excellence that define Alfa Romeo’s legacy.

02 / TECHNICAL IDENTITY

Specifications & construction

Production & construction

Production type
Limited

Engine & performance

Engine configuration
Supercharged Inline-6
Displacement
1,752 cc
Power (CV)
80 CV
Engine speed
4,400 rpm
Transmission
4-speed manual
Drive
Rear-wheel drive
Top speed
135 km/h
Specification notes
Confidence detail moved from confidence: high_disposition_only. High-confidence body-specific baseline from Museo Nicolis and Ruoteclassiche: supercharged inline-six 1752 cc, 80 CV at 4400 rpm, 4-speed manual, RWD, wheelbase 3160 mm, dimensions 4580 × 1720 × 1490 mm, top speed about 135 km/h.

Dimensions & accommodation

Wheelbase
3,160 mm
Length
4,580 mm
Width
1,720 mm
Height
1,490 mm

03 / DESIGN, BODY & SUPPLIERS

Design, body & suppliers

Design & manufacture

Manufacturer · Documented
Alfa Romeo
Coachbuilder / Body Builder · Documented
Castagna

Body form & construction

Body style
Cabriolet

04 / EVENTS & CHRONOLOGY

Events & awards

No events or documented awards are currently recorded for this vehicle.

06 / CHASSIS REGISTER

Chassis register

Ownership & provenance

Ownership & history · Legacy attribution
Museum Car

09 / PERIOD ARCHIVE

Period photographs & advertising

THE CONVERSATION

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