Rare Car Archive

Makes › Bentley United Kingdom › Bentley › Bentley 4.5 Litre · Rare production

Bentley
Bentley 4.5 Litre

720 built including 55 supercharged; base model not separately on site.

Still being researched: why it matters, identification guide, full specifications. Everything shown is checked against the cited sources. Know more? Send us a source.

Bentley Bentley 4.5 Litre (Wikimedia Commons search)
Bentley Bentley 4.5 Litre (Wikimedia Commons search)
Photo: MrWalkr · CC BY-SA 4.0
?ProductionNot yet verified
0Chassis documentedin this archive
?SurvivingNot yet verified
Contents
  1. 01Overview
  2. 02Production & history
  3. 03Specifications
  4. 04Colours & options
  5. 05Individual cars
  6. 06Reference

01Overview

At a glance

Built
Not yet verified
Years
Not yet verified
Engine
4-cylinder, front longitudinal · 4,398 cc / 4.4 LFactory: 4,398 cc
Power
Not yet verified
Top speed
Not yet verified
Body
Not yet verified
Designer
Not yet verified
In this archive
Not yet verified
Surviving
Not yet verified

Sources and any conflicting figures are in the sections below.

Why it matters

Not yet documented. Have a source? Contribute it.

How rare is it?

Six separate kinds of rarity – never combined into one number.

Model rarityNot yet assessed Production figure not yet verified.
Specification rarityNot yet assessed
Colour rarityNot yet assessed
Individual rarityNot yet assessed
Historical rarityNot yet assessed
Survival rarityNot yet assessed

Each kind of rarity is rated separately and never combined.

Photos

Exterior, interior and detail photos with their licences.

02Production & history

Production

Every figure says what it counts.

No production figures recorded yet.

History

Series production of the 4 1/2 Litre began around the end of 1927, using an engine built to the proven pattern of the earlier 3 Litre. A supercharged 'Blower' version was built for competition. To homologate it for Le Mans, at least 50 cars had to be produced.

Variants

How each version differs from the standard Bentley 4.5 Litre.

No variants documented yet. Have a source? Contribute it.

03Specifications

Technical specifications

Engine

Engine familyNot yet verified
Engine codeNot yet verified
Layout4-cylinder, front longitudinal1 Independently researched
Cylinders41 Independently researched
Displacement 4,398 cc / 4.4 LFactory: 4,398 cc1 Independently researched
Bore 100 mmFactory: 100 mm1 Independently researched
Stroke 140 mmFactory: 140 mm1 Independently researched
Compression ratioNot yet verified
Fuel systemNot yet verified
PowerNot yet verified
Power atNot yet verified
TorqueNot yet verified

Transmission & drivetrain

GearboxNot yet verified
GearsNot yet verified
Driven wheelsNot yet verified

Chassis, body & dimensions

ChassisNot yet verified
Front suspensionNot yet verified
Rear suspensionNot yet verified
BrakesNot yet verified
SteeringNot yet verified
Body constructionNot yet verified
Wheelbase 3,302 mmFactory: 3,302 mm1 Independently researchedListed in the source's 4.5 litre supercharged column; base-car value not stated.
Length 4,597 mmFactory: 4,597 mm1 Independently researchedSupercharged column of source; base-car value not stated.
Width 1,740 mmFactory: 1,740 mm1 Independently researchedSupercharged column of source; base-car value not stated.
HeightNot yet verified
Front track 1,422 mmFactory: 1,422 mm1 Independently researchedSupercharged column of source; base-car value not stated.
Rear track 1,422 mmFactory: 1,422 mm1 Independently researchedSupercharged column of source; base-car value not stated.
Kerb weight 1,727 kgFactory: 1,727 kg1 Independently researchedSupercharged column of source; base-car value not stated.
Dry weightNot yet verified

Performance

Maximum speedNot yet verified
0–100 km/hNot yet verified
Fuel tankNot yet verified

“Not yet verified” means no source has been checked for that value yet. Nothing is estimated to fill a gap.

04Colours & options

Factory colours & interiors

Original paint and trim, with the number of cars in each where a source gives it.

Not yet documented. Have a source? Contribute it.

Factory options & codes

Codes are shown exactly as written by the manufacturer.

Not yet documented. Have a source? Contribute it.

05Individual cars

Chassis register

Every documented car, with its colours, history and where it is now. Open a row for the full record. Known chassis are not automatically authenticated originals.

Not yet documented. Have a source? Contribute it.

Competition history

Every race result of the individual cars, in date order. Click a chassis number to open its full record in the register.

Not yet documented. Have a source? Contribute it.

Auction & sale history

Documented public sales of the individual cars. Click a chassis number to open its full record in the register.

Not yet documented. Have a source? Contribute it.

See one in person

Museums where an example of this car can be seen.

No example is documented on public display yet. Have a source? Contribute it.

06Reference

Identification guide

How to tell an original from a replica or later conversion.

Not yet documented. Have a source? Contribute it.

Sources

Each number links to the exact facts it supports.

  1. 1
    Bentley 4 1/2 Litre and 4 1/2 Litre Supercharged (1926-1930) Level C Thoroughbred Cars
    • Engine alignment | Longitudinal
    • S-4
    • 4398 cc (268.382 cu in)
    • bore and stroke listed as 100.00mm and 140.00mm
    • Wheelbase 3302 mm (130 in)
    • Length 4597 mm 181 in
    • Width 1740 mm 68.5 in
    • front 1422 mm 56 in
    • rear 1422 mm 56 in
    • Kerb weight 1727 kg 3807 lb
    Accessed 2026-11-13

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