Having been running my I10 for the last couple of weeks on BP Ultimate (97) and getting about 47mpg I changed to Jets normal unleaded. After 2 tankfuls I noticed that my MPG was now down to 42-mpg. This is very disappointing. So I was wondering if everyone could post what MPG they are getting, the type of driving (city,open roads ect) I10 current milage type/brand of fuel used. This way we can see if some fuels suit the car better then others and indeed if the MPG improves with higher milage.
So for starters.
I10 Style 1.2
milage 1000 miles
Type of driving, open country back roads normal speed about 50mph. Journey 20 miles each direction.
Type of fuel used BP Ultimate (97 Ron) 47 mpg
Jet normal (95) 42 mpg

Air con has been used with both fuels. The weather has been very good.

I have had my i10 Style for four weeks and have done nearly 900 miles. I have always try and use Shell 95 RON in all my vehicles and have had, so far, 52 and 51 mpg doing the same sort of journies as talkalot. I will fill up again tomorrow and will post my mpg. I have used the air con occasionally and haven't hung about either. In my experience, Shell has always given me a couple more mpg over supermarket fuels and BP is similar. I try and avoid Tesco fuel as I have had a couple of bad experiences with it iin the past involving rough running etc.

My best is about 56mpg on highway with 3 passengers and their luggages with AC. Just driving about 50mph , less throttle , less brake.. Put the tyre pressures about 38psi(I know its not secure but I believe it effects so much! ) ot in hurry in town , follow up traffic in attention .. These are the keys of getting the best result..

Mixed driving it changes between 40-48mpg ..

I've had my i10 1.2 Comfort for 8 months, done 3500 miles and use petrol from the local Morrisons supermarket with no issues. I have a daily commute of just under 7 miles each way, and am currently getting just about 50 mpg on average. I've only done one journey so far of reasonable mileage (250 miles approx) at speeds of up to 70 mph, and to my surprise, I managed just under 65 mpg without trying, so if I were to really make an effort to drive economically, I'd imagine 70 mpg might well be possible. I am very happy with the fuel consumption, although it needed to top 2500 miles on the clock before it improved noticeably, but it's much better than my previous car (4 litre V8 Discovery running on LPG), as that averaged 11/12 mpg!!!!
LC.

Hi guys,

I think I'm only getting around 40mpg! eek!

It might be my awful maths... Let's keep it simple

From a *full* tank, how many miles do you get until the petrol light comes on?

I get around 300. But I figure the car has at least another 5 litres left in the tank at that point...

I get about the same miles until the light comes on, but I find that there's still 7 litres in the tank at that point.

1.1 Comfort with about 7000 miles on the clock so far.


TJ

That's re-assuring. What's everyone else geting from the full tank until the light comes on?

After our return journey from La Provence, I have just filled the tank and checked the consumption. Virtually all the distance was covered on roads where I could legally keep up to the 120kph mark. Temperature near 30ºC and airco always on; two mountain ranges to be crossed (speed dropped to 100kph on the steepest hills but I didn't want to push things).

The bad news.....just barely 40mpg but on the other hand, we have only covered 3500kms and SWMBO & I are not lightweights and did have luggage for a four week camping break and 24 bottles of wine on board.

We keep hoping for better things.

Important note: Spain has excellent wines but we do like some variety and try to have some French bottles around too.

I have had my i10 about 5 days and done 130 miles so far< worked out I am getting 43mpg, will this improve as the engine gets run in? Also should I keep away from supermarket fuels and stick with Shell, BP, 95 Ron fuels?

Ribs: might not be your maths. Try this method instead of the fuel-light-on method. The fuel-light-on can vary with hills etc...
Fill up. Read the mile clock. Drive far enough to clock up about 200 miles or so.
Read the mile clock again. Fill up. Note how much it took to fill.
So your MPG = the difference between the two mile-readings divided by how many gallons you put in the tank.

1 litre = 0.22 Imperial gallons so multiply your litres filled by 0.22 to get gallons and use that when dividing. eg:
30 litres = 6.6 gallons and distance = 275 miles.
MPG = 275/6.6 = 41MPG.

Had my i10 for two days and done 160 miles (commuting and belt down motorway), 45.6mpg which I'm assuming will improve as the engine gets a few more miles under its belt.

Got the fuel from Morrisons, I don't agree with all this supermarket v Shell etc. The tanker that delivers to the local Morrison has Texaco on the side and comes from the shell refinary at Stanlow.

last results of mixed driving(full time AC on)
filled the tank drove about 275miles then 5.94 gallon filled..

46mpg:)

Im in love with my red baby , after cooperS its so economic =)

I have a "cross-country" commute of 35 miles daily and have done just over 1000 miles in my i10 Classic 1.2. The first week (car brand new) was 47mpg. This week I have topped 50mpg for the first time. Last week during the hot weather I was using the aircon continually and got 44.5mpg.

A update. My I10 has now done around 1800 miles. I had been filling up with Jet 95 ron petrol and my MPG averaged between 43-47 MPG depending on using the aircon. I passed a Shell Petrol station last week and filled up with the good stuff Shell Power 99 Ron. Now the places I drive to are still the same only when I just filled up (with Shell again) my MPG this time was 52MPG. So will try Shell a few more times to see if its a fluke. The car responds better with the higher ron and it looks like I am getting a extra 5 miles to each gallon. The only thing I have to decide is is it worth the extra 6p per gallon extra over the normal stuff. Will keep you updated in a weeks time.

An explanation of RON (Octane rating) in the link below. I think the interesting point is that a higher Octane fuel has no more energy than a lower Octane fuel, but it is required in the more powerful engines which have very high compression ratios in order to prevent the "dieseling" effect (or pre ignition).

http://en.wikipedia.org/wiki/Octane_rating

This post has been edited by shedloads: Jul 15 2009, 02:58 AM

Yes but unleaded petrol has different grades. Supermarkets supply the cheap stuff, generally 95RON, the poorest grade they can get away with. Shell is generally 98 RON. So far as the tankers go, they are subcontracted. My local ASDA has all sorts of tankers turning up.

So far as the quality, having previously owned a Mitsubishi Carisma 1.8, I learnt a very expensive (£1,100) lesson using supermarket fuels when the engine 'carbed up'.

working on a 20 litre fill I have managed 170 miles before the refill light came on, which gives me a mpg of only 38mpg, which I am not too happy with. I don't think I am leathering it and it's all city driving, so plenty of lights etc. For my next fill up I'll try a Shell station and might go for v-power.

Doesn't the handbook give 95 RON as the correct grade? That's certainly what the dealer told me to fill up with - when I took the car with a cupful of petrol in the tank!

Is there a fuel specialist on the site who can comment?

A bit of useful info for you:

http://www.petrolprices.com/about-fuel.html

Good link Trumpton.
From that one, I've found this: From WIKI_Answers: The use of a higher octane fuel than required, is a twofold mistake. You are wasting money and can possibly do damage to the engine. Using a higher than require octane rated fuel will not increase performance, clean the engine, or offer any benefits whatsoever. If your engine was designed for 87 octane, then use only 87 octane. If it requires 91 octane, then by all means use 91 octane. The engineers who designed the engine know full well what octane fuel it needs. The octane rating of gasoline determines how much the fuel can be compressed before it spontaneously ignites. That is all it does! (Look in your vehicle's owner's manual for information about the octane requirements of your vehicle).
Now, some people believe that using higher octane fuel will clean out your engine. However, higher-octane fuel contains no more detergent than low-octane fuel. If you feel you need some extra cleaning, there are additives that you can get at the local auto shop, but do not use them too much or it will damage your fuel injectors.

Can cause knocking ?

This post has been edited by FlowerGirl: Jul 14 2009, 01:27 AM