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Mpg!


Gandalf the Yellow

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right guys haven't been on here for a while and i'm bored at work and have been wondering lately how many MPG people are getting these days in their cars seeing petrol costs are still not cheap (though ASDA is back down to 113.9 for petrol i think :)) - when driving sensibly :turned:

if you have a trip computer that measures it for you then this is eassssy. if not you're going to have to fill it to the brim and do some calculations yourself.

it'll be interesting to know:

Engine: Petrol

Size: 1.25

Model: Fiesta mk 5 facelift

Driving Conditions: City+Country

Combined MPG: topped out @ 41.2 today and its still rising

Rated MPG (manufacture) : 48

Comments: i keep my revs around 2-2.5k most of the time and 3k in slightly hilly conditions... don't use air con and sometimes have the windows down but don't think they make massive differences.

go drive and calculate then post away boys.

steve

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Engine: Petrol

Size: 1.0

Model: vauxhall corsa C

Driving Conditions: City(mostly) +Country

Combined MPG: about 36 I think

Rated MPG (manufacture) : 47 (i think)

Comments: It gets pretty raped to be honest, due to its savagly low power, it requires a fair bit of revving pulling away/gaining speed afterwards. Im sure I could get it better but then Id be one of those people who sits at a junction until the road is COMPLETLY clear.

Edit: Windows down sometimes.

Edited by Tom_
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Engine: Diesel

Size: 1.4

Model: Fiesta mk 5 (I think... )

Driving Conditions: Motorway and urban

Combined MPG: 62-64 :D

Rated MPG (manufacture) : Up to 74.9 (must be sitting at 56mph on a flat motorway, lol)

Comments: No air con or windows open, probably do approx 50% motorway miles. Need to take my tuning box thingy off and it should go up a bit more.

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Engine: Petrol (shell V-power only)

Size: 1781cc

Model: 20valve turbo

Driving Conditions: 80 miles a day motorway + bit of city

Combined MPG: 32 (@240bhp)

Rated MPG (manufacture) : 35 (@150bhp)

Comments: standard it made around 32mpg, remapped to 190bhp mpg went up to easily 40 on a run and 34 around town, now with bigger turbo running at 240bhp it's doing 36 on a run and about 28 around town.

This is since fitting a larger fuel pump recently, before hand, with a SMALLER pump, it was doing 28mpg MAX, how strange!

also: I have run it on 95RON fuel in the past, and it does roughly 4mpg LESS on 95RON fuel compared to Shell 99RON

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My little Polo 1.6 petrol does about 34mpg which is a bit annoying really, it should do more.

We just drove to the south of France in a VW transporter and even that was getting more MPGs than my car (admittedly that was a diesel though).

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My little Polo 1.6 petrol does about 34mpg which is a bit annoying really, it should do more.

We just drove to the south of France in a VW transporter and even that was getting more MPGs than my car (admittedly that was a diesel though).

hmmm how old is your polo? i remember someone telling me that aged cars tend to use more fuel compared to when they're newer/minter?

36mpg, where and how long do you drive for normally?

edit: prawny thats good for an audi pushing 240bhp, is the 99RON worth the extra pennies then?

steve

Edited by Steve Tse
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I've got a petrol Vauxhall Vectra 1.8 16v. I'm mainly driving round locally, so city, and I'm getting around 30mpg. I'm planning on getting a diesel for my next car :)

Edited by 531joshua
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Engine: Petrol

Size: 2319cc

Model: T5

Driving Conditions: Only long haul. Short distance isn't too bad - but I only use this car for long distances and carrying amps and gig equipment around.

MPG: On a run I expect to get 35. City driving, probably about 25. (2000Rpm)

Rated MPG (manufacture): I have been told 30 on a run, and 20 city driving. 10 track driving apparently. (3000Rpm) Noticible difference for an extra 5 mph, and more gear changing.

Comments: This car, with its previous owner use to cost him £50 to fill the tank. This was only 5 or 6 months ago. For me, it now costs close to £70. I never use the air con because; my mpg will just drop significantly.

Extra Comment: I use to have a really bad habbit when I first got it, I liked to hear the V5. Then when I noticed how much fuel I was going through, I backed off.

Edited by Hendrix
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hmmm how old is your polo? i remember someone telling me that aged cars tend to use more fuel compared to when they're newer/minter?

36mpg, where and how long do you drive for normally?

It's R reg, so almost 10 years old now. And yeah, older cars become less efficient and powerful. I don't drive a massive amount - just to the supermarket and around the city so I'd probably get more if I did motorway miles.

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Engine: Petrol

Size: 998cc

Model: Mini

Driving Conditions: Town/country

Combined MPG: about 23ish

Rated MPG (manufacture) : god knows

Comments: i would like to say I drive nice and steady, but I don't at all, mostly gear changing about 4500-5500, I'm terrible for driving hard. (Don't read as drive wrecklessly)

Good on lonnnng motorway drives thou, about 45-50 mpg at 65mph.

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unlucky hendrix. 2.4ltr. screw that thats double the size of mine, though you car is probably double the weight too...

:P sorry had to be done.

just curious and i know yo can't 'measure it' but how much gas do you guys apply most of the time? like mines less than half, maybe about 1/4 down on the pedal.

and revs - whats your average before gear changes?

steve

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just curious and i know yo can't 'measure it' but how much gas do you guys apply most of the time? like mines less than half, maybe about 1/4 down on the pedal.

steve

I can :D General combined town/motorway driving I see 23% throttle.

Andy P

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Well hark at you :P

I don't know how much throttle I use... not a lot... accelerate slowly, don't tend to go above 2.5k RPM (max torque for my car is at 1.8k).

If you want I could post up a datalog of my journey home from Tesco the other night complete with realtime rpm, throttle position, air/fuel ratio, coil dwell time, exhaust gas temp, coolant temp, engine temp, air intake temp, fuel pressure, manifold atmospheric pressure, ignition advance, injector duty cycle, pulse width, battery voltage readings.

Couldn't tell you what MPG i was getting though! :D

Andy

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If you want I could post up a datalog of my journey home from Tesco the other night complete with realtime rpm, throttle position, air/fuel ratio, coil dwell time, exhaust gas temp, coolant temp, engine temp, air intake temp, fuel pressure, manifold atmospheric pressure, ignition advance, injector duty cycle, pulse width, battery voltage readings.

Couldn't tell you what MPG i was getting though! :D

Andy

am i being silly in thinking that by using the fuel/air mixture, fuel pressure, and revs you could work out the mpg? I know it's not worth doing, i just meant theoretically. And seeing that datalog would be pretty good anyway - because I'm a geek.

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Engine: Turbo Diesel 4 Cylinder

Size: 1997cc

Model: Peugeot 306 phase 2 GLX

Driving Conditions: City+Motorway

Combined MPG: 35 When on the motorway, not sure about city.

Rated MPG (manufacture) Urban: 40.9 Cruise: 65.7 Speed: 54.3

Comments: Lately I've been trying to keep the revs just over 1k when driving around locally and I've seen a massive change.

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Haha, probably not a lot :P

Haha! definately not - especially with epic fuel leak I found last night!

am i being silly in thinking that by using the fuel/air mixture, fuel pressure, and revs you could work out the mpg? I know it's not worth doing, i just meant theoretically. And seeing that datalog would be pretty good anyway - because I'm a geek.

Yeah, it would definately be possible but to be perfectly honest I'm not bothered at the moment! I'm due to take the car to the south of France next month - about 1000 miles each way so I'll probably be able to see how fuel efficient it can be burning an entire tank at 70mph.

Hoping for my wallets sake its surprisingly good!

Andy

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am i being silly in thinking that by using the fuel/air mixture, fuel pressure, and revs you could work out the mpg? I know it's not worth doing, i just meant theoretically. And seeing that datalog would be pretty good anyway - because I'm a geek.

surely its easier with just how much petrol yo have and how many miles you're doing? hence the term MPG?

but yer that seems well geeky... :S

steve

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Engine: Petrol

Size: 1.6

Model: CRX 1.6 DOHC '91

Driving Conditions: City+Country

Combined MPG: 39 (city+country) up to 44 for long distance runs.

Comments: Don't pay attention to driving efficiently. I use full throttle frequently.

Also run a Honda S2000, only refueled it once. Got 22mpg. Quite costly considering it runs on premium unleaded. But then I rarely shift under 5k unless in a traffic jam.

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surely its easier with just how much petrol yo have and how many miles you're doing? hence the term MPG?

but yer that seems well geeky... :S

steve

yea, i meant at any given moment in time - didn't make that clear in the first one. Like my astra will tell me live (well, every second or so) what MPG i'm doing, and obviously if i'm ragging it it goes down to about 5, or i can make it sit at just below 50. It's quite a handy feature to have if you're skint!

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Inur: full throttle and still getting 39mpg?? thats well good.

Pocket Rocket: ahh right i get you now, i guess i can do the same if i reset the computer every 5-10 mins then it will be pretty much real-time MPG measuring device...cos its worked out on average but i haven't yet reset it since i had the car..

steve

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Engine: Petrol

Size: 2.0 @ 217bhp

Model: Integra Type R

Driving Conditions: Everything but motorways

Combined MPG: 27-30

Comments: Super Unleaded only tested. Drive normally on the commute but sometimes I can't help making lots of noise and burning all my money. So a mix of driving style.

*awaits OD404*

Edited by Dan Campbell
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