DieDeasy Motor Car Manufacturing Co. Ltd. war ein britischer Automobilhersteller, der 1907–1910 inCoventry (Warwickshire) ansässig war. 1909 stießJohn Davenport Siddeley zur Geschäftsleitung und das Unternehmen wurde inSiddeley-Deasy Motor Car Manufacturing Co. Ltd. umfirmiert.
Bei Deasy entstanden Personenkraftwagen von derMittelklasse bis zurOberklasse, die ausnahmslos mit Vierzylinder-Reihenmotoren mit 1,95 l – 12,0 lHubraum ausgestattet waren.
| Modell | Bauzeitraum | Zylinder | Hubraum | Radstand |
|---|---|---|---|---|
| 24 hp | 1907 | 4 Reihe | 4503 cm³ | 3086 mm |
| 25 hp | 1908–1910 | 4 Reihe | 4503–4942 cm³ | 3099 mm |
| 35 hp | 1908 | 4 Reihe | 7600–8620 cm³ | 3353 mm |
| 45 hp | 1908 | 4 Reihe | 11978 cm³ | 3200 mm |
| 14 hp | 1909 | 4 Reihe | 2919 cm³ | 2870–3124 mm |
| 15 hp | 1909–1910 | 4 Reihe | 3053 cm³ | 2896 mm |
| 18/28 hp | 1909 | 4 Reihe | 4084 cm³ | 2921–3226 mm |
| 25 hp | 1909 | 4 Reihe | 4943 cm³ | 3099 mm |
| 35 hp | 1909 | 4 Reihe | 7603 cm³ | 3404 mm |
| 12 hp | 1910 | 4 Reihe | 1944 cm³ |
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