Hispano-Suiza J12

vs

Hispano-Suiza H6B

Spain vs France — 1931 vs 1919

Hispano-Suiza J12 (1931)
Hispano-Suiza H6B (1919)
Specifications
J12H6B Boulogne Sport
Horsepower220 hp135 hp
Engine Size9,424 cc6,597 cc
Top Speed93 mph
Weight3,968 lbs
Wheelbase3,810 mm3,720 mm
Length5,600 mm
Units Produced1202,600
Value (Excellent)$5,000,000$3,000,000
Collectibility5/1010/10
Rarity10/109/10
The Verdict

This matchup is remarkably close. The 1931 Hispano-Suiza J12 offers more power, greater rarity, while the 1919 Hispano-Suiza H6B Boulogne Sport counters with stronger collectibility, better value. Neither holds a decisive advantage, making this a true enthusiast's dilemma. Your choice ultimately depends on which driving philosophy resonates more with you.

Overview

Within the Hispano-Suiza stable, the 1931 Hispano-Suiza J12 and 1919 Hispano-Suiza H6B Boulogne Sport represent different approaches to performance and purpose. Both carry the Hispano-Suiza badge, yet each carves out its own distinct identity. The 1931 Hispano-Suiza J12 holds a clear advantage in raw power with 220 hp compared to 135 hp, a 85-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Hispano-Suiza J12 uses a V12 displacing 9,424 cc, while the Hispano-Suiza H6B relies on a Inline-6 SOHC with 6,597 cc. Rarity plays a significant role here — with only 120 units built, the 1931 Hispano-Suiza J12 is considerably scarcer than the Hispano-Suiza H6B's 2,600 examples. From a collectibility standpoint, the 1919 Hispano-Suiza H6B Boulogne Sport rates higher among enthusiasts and auction houses.