1939 Alfa Romeo 6C 2500 Super Sport Spider


In a world where electric vehicles and autonomous technology reign supreme, classic cars like the 1939 Alfa Romeo 6C 2500 Super Sport Spider are making a delightful comeback on social media and at auctions.

 

Recent tweets on X featuring breathtaking images and captivating historical stories have ignited a fresh wave of interest, with collectors and automotive enthusiasts buzzing about this pre-war gem.

 

As of September 2025, this stunning Italian roadster, once a symbol of speed and elegance, continues to capture the hearts of vintage car lovers, seamlessly blending timeless design with engineering brilliance that still turns heads today.


1939 Alfa Romeo 6C 2500 Super Sport Spider

 

A Brief History of Alfa Romeo's Pre-War Pinnacle:

Unveiled in 1939, the Alfa Romeo 6C 2500 Super Sport Spider stood as the crowning achievement of the brand's 6C series, which ran from 1927 to 1954.

 

Crafted by the legendary engineer Vittorio Jano and polished by Bruno Treviso, it elegantly connected the pre- and post-World War II eras. This model evolved from the earlier 6C 2300, boasting a larger engine for improved performance.

 

Produced in limited quantities, often featuring bespoke bodies from esteemed coachbuilders like Touring or Pininfarina, the Super Sport Spider catered to wealthy buyers in search of a perfect mix of luxurious touring and sporty flair.

 

It even made its mark in prestigious races like the Mille Miglia and Tripoli Grand Prix, highlighting its competitive spirit.

 

Key Specifications:

The 1939 Alfa Romeo 6C 2500 Super Sport Spider boasts impressive specs for its era, making it a standout in the vintage car world. The following are the key specifications in a table:

 

Category

Details

Engine

2,443 cc (149 cu in) DOHC inline-six cylinder, aluminum-alloy head, cast crankshaft.

Power Output

110-120 bhp at 4,800 RPM (Super Sport tune with triple carburetors).

Torque

Approximately 140 lb-ft (estimated based on era standards).

Transmission

4-speed manual gearbox.

Drivetrain

Front-engine, rear-wheel drive.

Dimensions

Wheelbase: 2.75 meters (108.2 inches); Length: ~4.2 meters; Weight: ~1,100 kg (dry).

Top Speed

Up to 100-110 mph, making it one of the first Alfas to hit the century mark.

Acceleration

0-60 mph in approximately 12-15 seconds (era estimates).

 

Standout Features:

Beyond raw specs, the 6C 2500 Super Sport Spider was loaded with advanced features for the late 1930s:

  • Suspension: Fully independent setup all around, with torsion bars at the rear and coil springs upfront, delivering superior road holding and comfort.
  • Brakes: Large hydraulic drum brakes for reliable stopping power.
  • Fuel System: Improved feed for better performance, often with multiple carburetors in Super Sport variants.
  • Chassis: Steel ladder frame with a short wheelbase for agility, ideal for both road and light racing duties.
  • Interior: Luxurious leather seats, wood-trimmed dashboard, and basic instrumentation, emphasizing driver-focused elegance.
  • Optional Extras: Some models featured superchargers or racing-tuned components, though the standard Super Sport was naturally aspirated.


These elements made it versatile for grand touring or spirited drives, setting it apart from contemporaries.


Capacity and Practicality:

The 1939 model is a charming two-seater spider (convertible) that comfortably accommodates two passengers, though it does come with limited trunk space, just what you'd expect from open-top sports cars of that time.

 

It's all about those intimate drives rather than family road trips, focusing on performance over cargo room. With a fuel tank capacity of around 80 liters, it’s perfect for those longer journeys without the hassle of frequent refueling.

 

New Design Elements for 1939:

The "new design" for 1939 was all about refining the 6C lineup. The engine size increased from 2,309 cc to 2,443 cc, featuring an upgraded cylinder head and a 7:1 compression ratio that boosted both efficiency and power.

 

The bodywork, often crafted by Carrozzeria Touring, showcased smooth, aerodynamic lines with gracefully curved fenders and integrated mudguards, truly ahead of its time.

 

This "Ala Spessa" (thick wing) design would go on to influence post-war aesthetics, merging beautiful curves with practical aerodynamics.

 

Mileage and Durability:

While fuel efficiency wasn’t a major concern back in 1939, estimates indicate it could manage around 15-20 miles per gallon under normal driving conditions, which would drop to about 10-12 mpg during more spirited driving, thanks to its thirsty six-cylinder engine. 


Durability is a standout feature: the sturdy inline-six and independent suspension proved their mettle in races like the Mille Miglia, with many of these cars still going strong after decades. 


Owners often rave about their longevity, especially with proper maintenance, as the hand-built parts were designed for endurance rather than quick obsolescence.

 

Super Sports Spider Quality:

Visually, the Super Sport Spider is a stunner: Its long hood, low-slung profile, and flowing spider body evoke pure Italian romance. The look is elegant yet aggressive, with chrome accents, wire-spoke wheels, and a convertible top for open-air freedom.

 

Quality shines through in premium materials, aluminum body panels, high-grade leather, and precise assembly reflecting Alfa Romeo’s artisanal craftsmanship. Restored examples today maintain this aura, often described as “a postwar paradox” for their timeless blend of sport and luxury.

 

Pricing: From Historical Value to Modern Auctions:

Originally priced around $5,000-$7,000 in 1939 (equivalent to $100,000+ today), current values soar due to rarity. Recent auction sales include:

 

A 1939 6C 2500 SS Spider Corsa styled by Touring: $302,000 USD (2022).

Another SS Spider: €274,160 (~$335,407).

A rare Cabriolet variant: $4,000,000.

Typical range: $300,000-$1,045,000 for well-preserved examples.

 

Prices fluctuate based on condition, provenance, and coachwork, with pristine, matching-numbers cars fetching premiums at events like RM Sotheby's or Gooding & Company. 

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