Citroen Traction Avant (1948)Pedro Ribeiro Simões from Lisboa, Portugal, CC BY 2.0, via Wikimedia Commons

Citroen Traction Avant 15-Six H

1948 — France

Post-War (1946-1959)SedanFrenchBarn Find Candidates
Engine2,867 cc Inline-6 OHV
Power77 hp
Torque123 lb-ft
Transmission3-speed manual
DrivetrainFWD
Body StyleSedan
Weight2,976 lbs
0–60 mph21.5 sec
Top Speed81 mph
Production26,400 units
BrakesDrum / Drum
SuspensionTorsion bar, independent / Torsion bar, independent

Citroen Traction Avant 15-Six H

The Citroën Traction Avant 15-Six H represented the pinnacle of the revolutionary Traction Avant line when it was introduced in 1938 and continued production through 1956. As the six-cylinder flagship, it offered a level of refinement and performance that positioned it as a genuine executive car for its era. The 'H' designation indicated the hydraulic brakes, a significant upgrade that improved stopping power considerably. Under the elongated hood sat a 2867cc inline-six engine producing 77 horsepower, which may seem modest by today's standards but provided smooth, effortless cruising for the period. The engine's long-stroke design emphasized torque over peak power, making it well-suited to the car's luxury touring mission. What truly set the Traction Avant apart was its advanced engineering. Front-wheel drive was virtually unknown in the 1930s and 1940s, yet Citroën mastered it, providing excellent traction and superior handling compared to rear-drive contemporaries. The unibody construction was another pioneering feature, eliminating the traditional separate chassis and lowering the center of gravity for improved stability. The independent torsion bar suspension at all four corners delivered a supple ride quality that was leagues ahead of leaf-sprung competitors. Inside, the 15-Six H offered spacious accommodations for six passengers, with plush materials and an ambiance befitting its executive status. The wide cabin and lack of a transmission tunnel (thanks to FWD) created exceptional interior space. The steering wheel was perfectly positioned, and the column shifter allowed easy access to the three forward gears. Build quality was exceptional, with the car featuring Citroën's legendary durability. Many examples logged hundreds of thousands of kilometers with minimal maintenance. The 15-Six H found favor with French government officials, successful businessmen, and professionals who appreciated its combination of advanced technology, comfort, and understated elegance. Today, the 15-Six H is recognized as one of the most significant cars of its era. It represented a quantum leap in automotive engineering and proved that advanced technology could be successfully mass-produced. Collectors value the six-cylinder models for their superior performance and refinement compared to four-cylinder variants. Well-preserved examples command strong prices, particularly those with documented history and original specifications.

$25,000 – $55,000

Look for rust in the unibody structure, particularly around the front subframe mounting points and door sills. The inline-six engine is robust but requires regular oil changes and valve adjustments. Hydraulic brake systems should be completely rebuilt if the car has sat for years. Replacement parts are available through French specialists, though six-cylinder specific components can be expensive. Verify matching numbers and original specifications. The best examples have documented service history and original interior trim. Avoid cars with poorly executed modifications or rust repairs.

The 15-Six H was the top-of-line Traction Avant model from 1948-1956, featuring hydraulic brakes and a 2.9L inline-six engine. Only 26,400 units were produced during this period, making it considerably rarer than four-cylinder variants. The model was assembled exclusively at Citroën's Quai de Javel plant in Paris.