I have owned a 280GE which under any driving conditions did 15mpg or 16mpg with the caravan on the back, a diesel will do about 25mpg. Having said that, the G was certainly one of the best cars I have owned. The early models had a front bumber made of 6mm thick C section angle so no deed for bull bars
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I also did some off roading with mine, and the diff locks and low ratio box selector would go anywhere.