Discussion
So after a couple of full tank fill ups, I decided to work out my MPG.
I covered 496km which was 308 miles. about 240-250 ish of those miles was all motorway, the rest was a combination of town driving. No thrashing, not very spirited driving.
I worked out that I only managed to get 23 mpg! This can't be right, surely? I know my exhaust is blowing in the middle somewhere, but that shouldn't affect it too much, should it?
The motorway mileage was pretty much 95% done at 70mph, so even if the town driving brought the mpg down somewhat, surely the constantly motorway cruising should of brough it back up to higher figures?
I covered 496km which was 308 miles. about 240-250 ish of those miles was all motorway, the rest was a combination of town driving. No thrashing, not very spirited driving.
I worked out that I only managed to get 23 mpg! This can't be right, surely? I know my exhaust is blowing in the middle somewhere, but that shouldn't affect it too much, should it?
The motorway mileage was pretty much 95% done at 70mph, so even if the town driving brought the mpg down somewhat, surely the constantly motorway cruising should of brough it back up to higher figures?
That doesn't sound right, ~500km from a 40L tank is 8L/100km, which according to onlineconversion.com is 35mpg. Or was that 496km more than one tankful?
If it is that thirsty then you may have a slightly sticking rear brake caliper - its common enough on older MX5s, see if your brakes/wheels feel warm after your next drive.
If it is that thirsty then you may have a slightly sticking rear brake caliper - its common enough on older MX5s, see if your brakes/wheels feel warm after your next drive.
Edited by GravelBen on Thursday 31st March 08:46
1.8 so that'll be a 45L tank. Otherwise I agree with GB.
As an example, I've been doing some road-tuning on my car lately to get the fuel economy a bit better (MP62 supercharged, Adaptronic ecu) and my last tankful worked out as 25.4mpg and that is 100% B-roads, constant gear changes and some spirited driving when I get the opportunity
.
To work it out accurately use the following:
(Miles / Litres of fuel) * 4.54 = mpg
As an example, I've been doing some road-tuning on my car lately to get the fuel economy a bit better (MP62 supercharged, Adaptronic ecu) and my last tankful worked out as 25.4mpg and that is 100% B-roads, constant gear changes and some spirited driving when I get the opportunity
.To work it out accurately use the following:
(Miles / Litres of fuel) * 4.54 = mpg
Road trip lite on my iphone is currently showing an average of about 31mpg in my 1.8 Mk1 over a good few months.
I dont hang about, but it also gets used for a short but steady motorway commute everyday.
If I stick a tank in for a weekend and do a bit of extra hooning, it drops to high 20's.
I dont hang about, but it also gets used for a short but steady motorway commute everyday.
If I stick a tank in for a weekend and do a bit of extra hooning, it drops to high 20's.
snotrag said:
Road trip lite on my iphone is currently showing an average of about 31mpg in my 1.8 Mk1 over a good few months.
I dont hang about, but it also gets used for a short but steady motorway commute everyday.
If I stick a tank in for a weekend and do a bit of extra hooning, it drops to high 20's.
This is what I was expecting, so I know that something is up when I'm averaging 23 on the m-way I dont hang about, but it also gets used for a short but steady motorway commute everyday.
If I stick a tank in for a weekend and do a bit of extra hooning, it drops to high 20's.
hi
the last few times ive recorded my mpg ive got 22-23 each time.. thats with a few blasts round the yorkshire dales, but i have noticed the fuel does seem to drop pretty quickly even on motorway runs( but i do sit at 80 an occassionally going slightly quicker.. at my mot last month they said my rear caliper was sticking and that they'd fixed it(cleaned up the rust on the sliders and lubed it with copper grease) straight after they'd done this the car felt alot better it didnt slow with a bit of a jerk when i came off the throttle, but now i'm pretty sure the rears calipers are sticking again.. no doubt because they used copper grease :wallbash:
the last few times ive recorded my mpg ive got 22-23 each time.. thats with a few blasts round the yorkshire dales, but i have noticed the fuel does seem to drop pretty quickly even on motorway runs( but i do sit at 80 an occassionally going slightly quicker.. at my mot last month they said my rear caliper was sticking and that they'd fixed it(cleaned up the rust on the sliders and lubed it with copper grease) straight after they'd done this the car felt alot better it didnt slow with a bit of a jerk when i came off the throttle, but now i'm pretty sure the rears calipers are sticking again.. no doubt because they used copper grease :wallbash:
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