Jaguar Sovereign Problems: User-Reported Issues and Solutions
| Complaint | Description | Name and Location | Photo |
|---|---|---|---|
| loss of power and car backfires | 1996 Jaguar Sovereign; none | Thomas Tollan United Kingdom, Scotland, Lanark |  |
| problems starting, intermittant | 1989 Jaguar Sovereign; modified to take unleaded petrol | carol davies United Kingdom, carmarthenshire, whitland | |
| engine misfires | 1987 Jaguar Sovereign | david griffiths, ruislip |
Updated on June 10, 2026