Bentley 4.5 Litre (1929)Calreyn88, CC BY-SA 4.0, via Wikimedia Commons

Bentley 4.5 Litre Blower

1929 — UK

Pre-War (before 1946)Grand TourerRoadsterBritishConvertibleTurbo/SuperchargedRacing HeritageUnder 100 ProducedInvestment GradeMille Miglia EligibleLe Mans HeritageRally LegendsHomologation SpecialsMillion Dollar ClubLimited ProductionDesign IconsOpen-Top DrivingBritish RoadstersPre-War Masterpieces
Engine4,398 cc Inline-4 Supercharged
Power240 hp
Transmission4-speed manual (non-synchromesh)
DrivetrainRWD
Body StyleRoadster
Weight3,582 lbs
Top Speed125 mph
Production55 units
BrakesDrum (mechanically operated) / Drum (mechanically operated)
SuspensionSolid axle, half-elliptic leaf springs / Live axle, half-elliptic leaf springs

Bentley 4.5 Litre Blower

The Bentley Blower is one of the most iconic racing cars ever built. Sir Henry 'Tim' Birkin championed the idea of supercharging Bentley's 4.5-litre engine, against the wishes of W.O. Bentley himself, who preferred the larger 6.5-litre Speed Six. The Amherst Villiers supercharger boosted power to around 240 horsepower — enormous for 1929. The Blower Bentleys raced at Le Mans and Brooklands with considerable drama if not always success. Only 55 were built: 50 for road use (to meet homologation) and 5 'works' racing cars. Today, the Blower Bentley is one of the most valuable and recognizable vintage cars in existence. In 2020, Bentley announced a continuation series of 12 cars, each built to original specifications.

$3,000,000 – $10,000,000

Original Blower Bentleys are among the most expensive cars in the world — $3M-10M+. Authentication through the Bentley Drivers Club is essential. Many replicas and tributes exist. The continuation series cars are available new from Bentley. These are trophy assets for the world's top collectors.

Only 55 Blower Bentleys were built. 50 were customer cars required for homologation; 5 were 'works' racing cars. W.O. Bentley opposed the supercharger, preferring the naturally aspirated Speed Six. The Blower competed at Le Mans in 1930 but never won the race. Bentley launched a continuation series in 2020.