25th May 2023, 18:38

Never had this particular car or engine, but did drive a 1993 Senator 3.0 back in the day. Did around 25 miles per gallon. You could get 30 miles per gallon, but you need to cruise at a constant 60 miles per hour with no traffic. And expect less than 20 miles per gallon in winter and driving slowly in town.

26th May 2023, 06:35

I found the following:

@60kph 6.39L/100km

@80kph 7.07L/100km

@100kph 8.31L/100km

@120kph 9.23L/100km

https://www.carmag.co.za/news-blog/from-the-archives-opel-rekord-380i-gsi/