Moto Guzzi Regolarita 250 vs Adler ISDT (1965)
Side-by-side spec comparison, pricing, and a plain-English breakdown of how the Moto Guzzi Regolarita 250stacks up against the Adler ISDT. Numbers pulled from manufacturer spec sheets — click either bike for the full review.
Spec comparison
| Spec | Moto Guzzi Regolarita 250 | Adler ISDT |
|---|---|---|
| Model year | 1965 | 1958 |
| Price | — | — |
| Engine | 247 cc | 247 cc |
| Horsepower | 17 hp | 18 hp |
| Fuel capacity | 3.2 L | 3.2 L |
| Fuel type | petrol | petrol |
| Front brakes | Expanding brake (drum brake) | — |
| Rear brakes | Expanding brake (drum brake) | — |
| Tires | — | 3.25-16 / 3.25-16 |
Moto Guzzi Regolarita 250 vs Adler ISDT — which should you buy?
Picking between the Moto Guzzi Regolarita 250 and the Adler ISDT usually comes down to the numbers you care about most. On paper, the Moto Guzzi Regolarita 250 brings 17 hp, while the Adler ISDT counters with 18 hp.
Our spec tables above highlight the winning number on each line. For the full rider-focused reviews including real-world fuel economy, service costs and available colors, click into either bike: