Ariel Square Four
77/100 Overall
58 On the road95 As a classic
Classic motorcycle head-to-head
Ariel Square Four vs Gilera Saturno 500
Ariel Square Four scores 77/100 overall against Gilera Saturno 500 on 80/100. On the road: 58–62. As classics: 95–98. Overall result: Gilera Saturno 500.
Photo: Yesterdays Antique Motorcycles · CC BY-SA 4.0
Gilera Saturno 500
80/100 Overall
62 On the road98 As a classic
The numbers
Category-by-category result
| Category | Ariel Square Four | Gilera Saturno | Advantage |
|---|---|---|---|
| road | |||
| PerformanceDirect comparison of power, acceleration and usable performance across the pre-1990 classic field. | 7 | 7 | Level |
| HandlingSteering, stability, weight and real-road manners. | 6 | 9 | Gilera Saturno |
| BrakingDirect comparison of real stopping ability without an age allowance. | 4 | 6 | Gilera Saturno |
| ReliabilityEngine, electrics and general dependability when properly maintained. | 5 | 6 | Gilera Saturno |
| Ease of ownershipMaintenance, parts supply and access to specialist knowledge. | 5 | 4 | Ariel Square Four |
| ComfortRiding position, vibration and suitability for longer journeys. | 8 | 5 | Ariel Square Four |
| classic | |||
| StylingDesign quality, visual presence and period appeal. | 9 | 10 | Gilera Saturno |
| Historical importanceInfluence on motorcycling and importance within its era. | 10 | 9 | Ariel Square Four |
| Collector appealLong-term desirability among classic motorcycle enthusiasts. | 9 | 10 | Gilera Saturno |
| 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 Gilera Saturno if…
you want a rare Italian sporting single with elegant design, racing heritage and abundant character.
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.
Gilera Saturno
The Gilera Saturno 500 was produced from 1946–1958 and used a 499cc air-cooled four-stroke single. Within this comparison library it stands out particularly for styling, collector appeal, character. 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.
Gilera Saturno
- Its production span in this library runs from 1946 to 1958.
- The recorded engine description is: 499cc air-cooled four-stroke single.
- Its strongest comparison scores are styling, collector appeal, character.
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.
Gilera Saturno
Collector interest is strongest where condition, originality and correct period details support the identity of the Gilera Saturno 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.
Gilera Saturno
- 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 Gilera Saturno
Final result
The verdict
Gilera Saturno 500 wins the direct on-the-road comparison. Gilera Saturno 500 wins the classic-motorcycle comparison. Gilera Saturno 500 takes the overall result after the road and classic scores are weighted equally.