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700/900 Series General Forum for the Volvo 740, 760, 780, 940, 960 & S/V90 cars |
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700/900 Fuel Economy (Petrol Engines)Views : 25955 Replies : 177Users Viewing This Thread : |
View Poll Results: What is your car's best fuel economy (petrol engines)? | |||
Less than 20mpg |
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11 | 5.61% |
20-21mpg |
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8 | 4.08% |
22-23mpg |
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14 | 7.14% |
24-25mpg |
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34 | 17.35% |
26-27mpg |
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27 | 13.78% |
28-29mpg |
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29 | 14.80% |
30-31mpg |
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31 | 15.82% |
32-33mpg |
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19 | 9.69% |
34-35mpg |
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5 | 2.55% |
Greater than 35mpg! |
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18 | 9.18% |
Voters: 196. You may not vote on this poll |
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#171 |
VOC Member
Last Online: May 4th, 2023 20:38
Join Date: Nov 2007
Location: West Sussex
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William 745 GL - 1986, B230K 745 GLE - 1987, B230E |
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#172 |
I've Been Banned
Last Online: Aug 10th, 2018 09:22
Join Date: Jan 2011
Location: The Lincolnshire Wolds & West Sussex Coast
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I believe it.
Once did an"economy run"in the '86 745a (B230k), achieved just over 40mpg. What is your experience, and how's the rebirth going OBV? Jon. |
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#173 |
🤍💙💗
Last Online: Yesterday 22:44
Join Date: Mar 2006
Location: Lichfield
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I want to change my original vote dagnabbit!
With a T cam the highest ever was 33 mpg. (sitting on the motorway) With an A cam the highest ever was 32 mpg. (sitting on the motorway) Now with a stump pulling M cam I've just hit a new PB of 36 mpg, rather easily it seems as that wasn't all motorway. Oh, and that's with a clapped out air filter, dizzy cap, and HT leads. ![]() Curiously, with this cam the fuel cut off seems to happen at 1600 rpm (that's right around 32 mph indicated in 4th gear). Although I think the cut off is related to road speed, and maybe the reason I didn't notice this before is because the engine sounded like it laboured a bit in 4th at that speed. ![]() The most fuel efficient speed for my car on the motorway appears to be 67 mph indicated.
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MY97 940 CD LPT Super Sports Edition 2 Turbo, Midnight Purple, 175,000 miles. ![]() |
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#174 |
loyalty
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I can't remember what I originally quoted but today only getting 26.2mpg,Probably due to the twin exhaust and the lovely sound it makes when revving high Lol.
It really isn't that loud and unless I crawl around in to high a gear or get up into higher revs you wouldn't notice it. Which is just how I like it as I don't have to listen to a constant roar,only when I want to hear it. Regards Brian. |
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#175 |
Volvo 740 2.3GL
Last Online: Sep 6th, 2013 19:04
Join Date: Mar 2013
Location: Tatabanya, Hungary
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I have a 740GL 230K engine with AW71 autobox. 20MPG the usual within the city and ~25MPG on motorway with the old dingy Pierburg 2b5. I installed a dual-barrel Solex 35/35 with dual gearwheel yesterday. I check the MPGs at the future
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#176 |
Premier Member
Last Online: Yesterday 19:56
Join Date: Jul 2009
Location: Holywood
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DWM- 42.9mpg, I don't want to wee on peoples figures, but 4.72L is a bit low accuracy, if you are just using fill ups its easy to be 0.5L out. Still 38mpg is pretty good.
Baggy- my experience and common knowledge on econmodders is that economy reduces with increased speed and revs. 50 is alot better than 70. I haven't tried any comparisons yet but I do expect that spark efficiency at low rpm is important given the difference in heasitation with a clean dizzy. |
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#177 | |
Member
Last Online: Apr 14th, 2018 10:24
Join Date: Nov 2009
Location: Yeovil
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#178 |
Member
Last Online: Apr 14th, 2018 10:24
Join Date: Nov 2009
Location: Yeovil
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First 160ish miles, 32.5mpg. No special effort other than sitting marginally below the speed limit. Very happy with that as a starting point
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Tags |
fuel consumption, fuel economy, mpg |
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