Madabout500
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Stop StART - Not sure about the part my wife took the car in and she described it as a plastic rod ! Its been fitted on thursday so can update after then.
General TwinAir Thread (including MPG)
- Thread starter grimwau
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General TwinAir Thread (including MPG)
If that were true then the trip computer would never be off.
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What? Have you ever done any sort of analysis of how things work, or do you just sit on your armchair and cast opinions about things?
No offence (and by that, please DO take offence), but you really do talk some cack sometimes.
No offence (and by that, please DO take offence), but you really do talk some cack sometimes.
I'm just saying that this is not how most sites seem to say that the trip computer works
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They're wrong. Read the manufacturers documentation, and speak to a few car systems software engineers. Or just work it out, there's no mystery there.
That's not to say that Fiat have necessarily got the algorithm spot on in the 500, but what I'm saying is how it would be done. Get FiatECUScan (or any OBD diagnostics tool) onto the engine management ECU and you'll see a fuel injection quantity value - this is fed into the CAN network and picked up by the instruments and then used for the trip computer calcs.
The thing that annoys me the most about internet fora is the possibility of speculation, making hypotheses that are clearly completely illogical!
That's not to say that Fiat have necessarily got the algorithm spot on in the 500, but what I'm saying is how it would be done. Get FiatECUScan (or any OBD diagnostics tool) onto the engine management ECU and you'll see a fuel injection quantity value - this is fed into the CAN network and picked up by the instruments and then used for the trip computer calcs.
The thing that annoys me the most about internet fora is the possibility of speculation, making hypotheses that are clearly completely illogical!
TrevC
Established member
Also as the tyres wear from new to 2mm this will change the distance reading by about 2% - of course this will also affect the calculated value - doh!
OP
OP
and of course, as everybody knows, the speedo can be out by up to 10%.
Well I have now covered 1500 miles. Taken a while (it is a second car...) and here are a couple of musings..
- I can't fault the engine, the TA has bags of character, plenty of go and makes the kind of noise I can listen to all day long
- I've started using ECO now and again for some trips, I actually find it quite relaxing to drive as it seems less frenetic
- I think it suits A roads and motorways fine, no issues here
- It rides reasonably well, better than my mini did (which had 18" run flats) and generates less road noise
- It is certainly a talking point... I've never had a car where woman have come up to me to ask questions and have a look around
And...
- there seems to be a wee bit of a rattle developing on the drivers side door, but that is only apparent at low speeds, the seats could be more comfy and oh, I find the oil dip stick hard to read (it seems to just randomly cover an area between the top and bottom markers). And there can be a bit of vibration through the wheel at around 3500 revs.....
- I can't fault the engine, the TA has bags of character, plenty of go and makes the kind of noise I can listen to all day long
- I've started using ECO now and again for some trips, I actually find it quite relaxing to drive as it seems less frenetic
- I think it suits A roads and motorways fine, no issues here
- It rides reasonably well, better than my mini did (which had 18" run flats) and generates less road noise
- It is certainly a talking point... I've never had a car where woman have come up to me to ask questions and have a look around
And...
- there seems to be a wee bit of a rattle developing on the drivers side door, but that is only apparent at low speeds, the seats could be more comfy and oh, I find the oil dip stick hard to read (it seems to just randomly cover an area between the top and bottom markers). And there can be a bit of vibration through the wheel at around 3500 revs.....
Modern synthetic oils are so free flowing that it's much harder to get an accurate dipstick reading than in days gone by.
Two things which may help:
- wipe the whole length of the dipstick before re-inserting it to take a reading
- keep holding the dipstick vertically after removing it to check the level.
You may have to repeat this a couple of times to clear the excess oil from the dipstick tube, but follow these two steps and you will get a good reading in the end.
Judging by the number of seriously overfilled engines after routine servicing, FIAT dealers have problems with this too!
TwinAir Newbie
Member
I agree about trying to read the dipstick!
Thanks for the update cjc.
I also find that I'm not really sitting in, but on the seat.
Thanks for the update cjc.
I also find that I'm not really sitting in, but on the seat.
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Long time since I posted, will click through 5000 miles tomorrow.
Average now approaching 50 mpg, last tankful, 52.9 mpg.
This tankful I am going to try in the normal mode rather than the 'eco' mode I have been using to date.
Cheers
D
Average now approaching 50 mpg, last tankful, 52.9 mpg.
This tankful I am going to try in the normal mode rather than the 'eco' mode I have been using to date.
Cheers
D
Just as an indication..... look at my average and look at yours, yours is higher. That said at the moment I'm probably averaging about 50 mpg and I'm hoping that with just having a service today that it stays that way through the summer
As is mine.
Not really, although I came to mine from a diesel and you need to drive the TA like a diesel to get the good figures.
Its very torquey, so use it.
Cheers
D
Its very torquey, so use it.
Cheers
D
I finally picked up my TA last night. Had about 6 miles on the clock when I got it, and the initial average MPG was something around 8.
The clock is up to 50 miles now and that has worked up to 29.9MPG. It's rising pretty rapidly - and I certainly haven't been driving it for economy!
Looking forward to seeing where it settles. I've reset my B-trip to see how I get on with a real commute home tonight.
The clock is up to 50 miles now and that has worked up to 29.9MPG. It's rising pretty rapidly - and I certainly haven't been driving it for economy!
Looking forward to seeing where it settles. I've reset my B-trip to see how I get on with a real commute home tonight.
Best ever mpg, and all the time on 'non eco'.
Fuelly says 52.9, dash say 53.1
Cheers
D
Fuelly says 52.9, dash say 53.1
Cheers
D
