MPG

securespark · 16 Feb 2010

Scuse the picture quality. This was taken by a passenger while on the move.

It says "190.0 MPG"

Later I saw it read 504.0 MPG.

How can you take the car's on-board computer seriously when it computes figures like these?

dextrous · 16 Feb 2010

Gallon of what, though

maltaron · 16 Feb 2010

If you have your MPG meter monitoring current fuel consumption it will go to very high figures in nearly idle mode i.e. down hill with little throttle, when deselerating etc. Most cars have the ability to switch to average consumption. I have had my car on 999 mpg.

gregers · 16 Feb 2010

likewise on my mota,but the true reading i have got is 59 mpg
not bad me thinks out of a nearon 2 ton car,ford galaxy.

Steve · 16 Feb 2010

maltaron said:
I have had my car on 999 mpg.

When slowing down or braking with the clutch, and a gear engaged, the reading will be 999. Because the engine is using no fuel*, but the car computer cannot compute infinity.

*This is true of all cars. By coasting to a stop with no gear engaged you're using more fuel to keep the engine ticking over. It needs no fuel if the wheels are driving the engine.

diesel C4 currently reading 53mpg.

securespark · 16 Feb 2010

I've never had it on 999 or anywhere near, neither on the Octavia or Mrs Secure's FR-V.

gregers · 16 Feb 2010

its scarey when it works the other way,
my m8 had a v6 ford cougar,accelerated hard and got it down to 11mpg and it didnt move for a ages,glad it was his

RF Lighting · 16 Feb 2010

Mine shows the average for the journey, rather than the MPG for that particular moment.

2.2l turbo diesel

WDIK · 16 Feb 2010

that frankly is sad

empip · 17 Feb 2010

securespark said:
Scuse the picture quality. This was taken by a passenger while on the move.

It says "190.0 MPG"

Later I saw it read 504.0 MPG.

How can you take the car's on-board computer seriously when it computes figures like these?

You must know how 'meters' can behave at their extremities !

Imagine your exhaust system if the motor were pumping fuel into the cylinders and further on the overrun - then you floor it -- barooom ! Or something like that anyway.

From some advertising stuff - re 'super duper' engine management system...

[url=http://www.linkecu.com/link-help-centre/glossary/over-run-def]Link...[/url] said:
...Overrun Fuel Cut
When the throttle is abruptly closed the engine generates more vacuum than under normal conditions (such as idle and light cruising). This condition is known as overrun. During overrun the ECU performs a fuel cut by switching off all injectors. This helps minimise the possibility of backfires occurring and reduces fuel consumption and emissions...

-0-

Mw Roofline · 17 Feb 2010

gregers said:
its scarey when it works the other way,
my m8 had a v6 ford cougar,accelerated hard and got it down to 11mpg and it didnt move for a ages,glad it was his

My Range Rover averages 12mpg, I'm seriously thinking getting it gas converted

gregers · 17 Feb 2010

Mw Roofline said:
gregers said:

its scarey when it works the other way,
my m8 had a v6 ford cougar,accelerated hard and got it down to 11mpg and it didnt move for a ages,glad it was his

Click to expand...

My Range Rover averages 12mpg, I'm seriously thinking getting it gas converted

using that much i think i would too,but your gas guzzler

weighs about 3 tonns and my m8s couger was no where near that,but the way his and yours eats petrol,GLAD ive got a diesel

kkynaston · 18 Feb 2010

My 1.9dcI laguna averages about 45 at the moment, (heated seats, lights, heater on all the time at the moment) but it hasnt got an instantaneous consumption mode, the only way to get an instantaneous reading is to reset the trip

The mpg will only go up to 99.9mpg (down hill engine off

) then the display goes --.-mpg but the range went up to 6000 miles

I wish

Donkmeister · 21 Feb 2010

If you want to get it really low, just drive in 1st gear at high revs...

Lowest average I've seen was 15mpg for a 15 mile journey in a mildly-tuned MG ZT-T 260.

On the subject of trip computers, every Ford I've driven recently only allows miles and MPG if you have outside temperature in Fahrenheit... If you want Celsius then you have to deal with that awkward "l / 100km" unit.

Until they fix that I won't be buying a Ford as it would just annoy the hell out of me!

joe-90 · 21 Feb 2010

Mw Roofline said:
gregers said:

its scarey when it works the other way,
my m8 had a v6 ford cougar,accelerated hard and got it down to 11mpg and it didnt move for a ages,glad it was his

Click to expand...

My Range Rover averages 12mpg, I'm seriously thinking getting it gas converted

Why not get rid of it? RR drivers are all prats anyway.

MPG

dextrous

kkynaston

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