Ariel Square Four
77/100 Overall
58 On the road95 As a classic
Classic motorcycle head-to-head
Ariel Square Four vs Manx Norton 500
Ariel Square Four scores 77/100 overall against Manx Norton 500 on 80/100. On the road: 58–60. As classics: 95–100. Overall result: Manx Norton 500.
Photo: Peprovira · CC BY-SA 3.0
Manx Norton 500
80/100 Overall
60 On the road100 As a classic
The numbers
Category-by-category result
| Category | Ariel Square Four | Manx Norton | Advantage |
|---|---|---|---|
| road | |||
| PerformanceDirect comparison of power, acceleration and usable performance across the pre-1990 classic field. | 7 | 8 | Manx Norton |
| HandlingSteering, stability, weight and real-road manners. | 6 | 10 | Manx Norton |
| BrakingDirect comparison of real stopping ability without an age allowance. | 4 | 7 | Manx Norton |
| ReliabilityEngine, electrics and general dependability when properly maintained. | 5 | 6 | Manx Norton |
| Ease of ownershipMaintenance, parts supply and access to specialist knowledge. | 5 | 3 | Ariel Square Four |
| ComfortRiding position, vibration and suitability for longer journeys. | 8 | 2 | Ariel Square Four |
| classic | |||
| StylingDesign quality, visual presence and period appeal. | 9 | 10 | Manx Norton |
| Historical importanceInfluence on motorcycling and importance within its era. | 10 | 10 | Level |
| Collector appealLong-term desirability among classic motorcycle enthusiasts. | 9 | 10 | Manx Norton |
| CharacterSound, feel, personality and memorable riding experience. | 10 | 10 | Level |
Choose the Ariel Square Four if…
you want unique engineering, refined four-cylinder character and one of Britain's most distinctive luxury motorcycles.
Choose the Manx Norton if…
you want one of racing's most important motorcycles, with sublime handling, competition pedigree and exceptional desirability.
Background
History
Ariel Square Four
The Ariel Square Four was produced from 1931–1959 and used a air-cooled square-four engine. Within this comparison library it stands out particularly for historic importance, character, styling. It suits riders who value the qualities described in its original profile rather than choosing by specification alone.
Manx Norton
The Manx Norton 500 was produced from 1947–1962 and used a 499cc air-cooled DOHC racing single. Within this comparison library it stands out particularly for styling, historic importance, handling. It suits riders who value the qualities described in its original profile rather than choosing by specification alone.
Interesting details
Did you know?
Ariel Square Four
- Its production span in this library runs from 1931 to 1959.
- The recorded engine description is: air-cooled square-four engine.
- Its strongest comparison scores are historic importance, character, styling.
Manx Norton
- Its production span in this library runs from 1947 to 1962.
- The recorded engine description is: 499cc air-cooled DOHC racing single.
- Its strongest comparison scores are styling, historic importance, handling.
Present-day appeal
Collector notes
Ariel Square Four
Collector interest is strongest where condition, originality and correct period details support the identity of the Ariel Square Four. Its library score for historic importance is 10/10. Values and desirability can vary substantially between years, specifications and restoration quality, so individual examples should be assessed on their own evidence.
Manx Norton
Collector interest is strongest where condition, originality and correct period details support the identity of the Manx Norton 500. Its library score for styling is 10/10. Values and desirability can vary substantially between years, specifications and restoration quality, so individual examples should be assessed on their own evidence.
Before you buy
Buying checks
Ariel Square Four
- Confirm the frame and engine identity match the advertised model and year.
- Check cold starting, smoke, oil leaks and unusual mechanical noise.
- Inspect the frame, wheels, brakes and suspension for wear, damage or poor repairs.
- Verify that important model-specific parts have not been replaced with incorrect later components.
- Review the paperwork, ownership history and any restoration invoices before purchase.
Manx Norton
- Confirm the frame and engine identity match the advertised model and year.
- Check cold starting, smoke, oil leaks and unusual mechanical noise.
- Check vibration-related fasteners, primary drive condition and signs of persistent oil leakage.
- Inspect the frame, wheels, brakes and suspension for wear, damage or poor repairs.
- Verify that important model-specific parts have not been replaced with incorrect later components.
- Review the paperwork, ownership history and any restoration invoices before purchase.
Period opposition
Historic rivals
Rivals to the Ariel Square Four
Rivals to the Manx Norton
Final result
The verdict
Manx Norton 500 wins the direct on-the-road comparison. Manx Norton 500 wins the classic-motorcycle comparison. Manx Norton 500 takes the overall result after the road and classic scores are weighted equally.