What is the engine displacement of the 1958 Ariel 4 G Square Four Mark II?

The 1958 Ariel 4 G Square Four Mark II has an engine displacement of 995.0 ccm (60.71 cubic inches).

How much horsepower does the 1958 Ariel 4 G Square Four Mark II have?

The 1958 Ariel 4 G Square Four Mark II produces 45.0 HP (32.8 kW )) @ 5500 RPM of power.

What is the top speed of the 1958 Ariel 4 G Square Four Mark II?

The 1958 Ariel 4 G Square Four Mark II has a top speed of 160.0 km/h (99.4 mph).

What is the fuel consumption of the 1958 Ariel 4 G Square Four Mark II?

The 1958 Ariel 4 G Square Four Mark II has an approximate fuel consumption of 3.04 litres/100 km (32.9 km/l or 77.38 mpg).

1958 Ariel 4 G Square Four Mark II Price, Specs, Review

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Review

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The 1958 Ariel 4 G Square Four Mark II is a classic motorcycle featuring a 995cc square four-cylinder engine that produces 45 horsepower at 5500 RPM, allowing it to reach a top speed of 99.4 mph. This engine design provides a unique and smooth riding experience. The 4-speed gearbox enables riders to effectively manage the engine's power output for both relaxed cruising and more spirited riding. Equipped with an oil-damped telescopic fork front suspension, the 4 G Square Four Mark II offers enhanced comfort and control compared to earlier models. The expanding drum brake provides adequate stopping power for its performance capabilities. Its fuel tank has a capacity of 5.0 US gallons, offering a reasonable range for extended rides. This Ariel appeals to enthusiasts who appreciate classic British motorcycles with innovative engineering. Its unique engine design, combined with improved suspension and performance, makes it a desirable choice for those seeking a vintage riding experience with a touch of modern refinement. The 4 G Square Four Mark II represents a notable advancement in Ariel's Square Four series.

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Pros (Advantages)

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✅ Why buy this bike?

• Iconic square-four engine configuration offers unique smoothness and distinct exhaust note for its era. • Strong torque from the large 995cc engine makes for relaxed cruising and effortless highway travel. • Excellent build quality and robust engineering ensure long-term durability and reliability when maintained. • Classic British styling and rarity make it a highly desirable collector's item with appreciating value. • Comfortable riding position and plush suspension make longer journeys enjoyable for the rider. • Impressive top speed for a motorcycle of its vintage, making it a capable tourer.

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Cons (Disadvantages)

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⚠️ Things to consider

• Heavy weight makes low-speed maneuvering and parking challenging, especially for smaller riders. • Drum brakes, while adequate for the era, lack the stopping power and feel of modern disc systems. • Parts availability can be scarce and expensive, requiring specialist knowledge for maintenance and repairs. • Fuel consumption is relatively high for a two-wheeler, impacting running costs on long trips. • Vibration levels can be noticeable at certain RPMs, typical for large displacement vintage engines.

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License Class (EU)

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The Ariel 4 G Square Four Mark II produces 45 HP, fitting A2 license limits (max 35 kW / 47 HP). For riders 18+.

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Fuel Economy & Running Costs

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Manufacturer-quoted consumption: 3.04 litres/100 km (32.9 km/l or 77.38 mpg).

⛽ Tank: 18.93 litres (5.00 US gallons)

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Insurance Class

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