Ariel Square Four
77/100 Overall
58 On the road95 As a classic
Classic motorcycle head-to-head
Ariel Square Four vs Ducati 900 Super Sport
Ariel Square Four scores 77/100 overall against Ducati 900 Super Sport on 85/100. On the road: 58–70. As classics: 95–100. Overall result: Ducati 900 Super Sport.
Photo: Yesterdays Antique Motorcycles · CC BY-SA 4.0
Ducati 900 Super Sport
85/100 Overall
70 On the road100 As a classic
The numbers
Category-by-category result
| Category | Ariel Square Four | Ducati 900SS | Advantage |
|---|---|---|---|
| road | |||
| PerformanceDirect comparison of power, acceleration and usable performance across the pre-1990 classic field. | 7 | 8 | Ducati 900SS |
| HandlingSteering, stability, weight and real-road manners. | 6 | 10 | Ducati 900SS |
| BrakingDirect comparison of real stopping ability without an age allowance. | 4 | 9 | Ducati 900SS |
| ReliabilityEngine, electrics and general dependability when properly maintained. | 5 | 6 | Ducati 900SS |
| Ease of ownershipMaintenance, parts supply and access to specialist knowledge. | 5 | 5 | Level |
| ComfortRiding position, vibration and suitability for longer journeys. | 8 | 4 | Ariel Square Four |
| classic | |||
| StylingDesign quality, visual presence and period appeal. | 9 | 10 | Ducati 900SS |
| Historical importanceInfluence on motorcycling and importance within its era. | 10 | 10 | Level |
| Collector appealLong-term desirability among classic motorcycle enthusiasts. | 9 | 10 | Ducati 900SS |
| 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 Ducati 900SS if…
you prioritise focused sporting handling, Italian design and an exceptionally involving bevel-Ducati experience.
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.
Ducati 900SS
The Ducati 900 Super Sport was produced from 1975–1982 and used a 864cc air-cooled bevel-drive 90-degree V-twin. 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.
Ducati 900SS
- Its production span in this library runs from 1975 to 1982.
- The recorded engine description is: 864cc air-cooled bevel-drive 90-degree V-twin.
- 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.
Ducati 900SS
Collector interest is strongest where condition, originality and correct period details support the identity of the Ducati 900 Super Sport. 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.
Ducati 900SS
- Confirm the frame and engine identity match the advertised model and year.
- Check cold starting, smoke, oil leaks and unusual mechanical noise.
- Check primary drive, charging system, engine mounts and evidence of non-standard modifications.
- 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 Ducati 900SS
Final result
The verdict
Ducati 900 Super Sport wins the direct on-the-road comparison. Ducati 900 Super Sport wins the classic-motorcycle comparison. Ducati 900 Super Sport takes the overall result after the road and classic scores are weighted equally.