forfour.co.uk
Forum => General Smart Chat => Topic started by: cheapshots on March 03, 2020, 08:35:12 AM
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Hi all, I'm now doing more motorway miles than in-town driving - I'd say 70% motorway and 30% in town.
My actual fuel consumption is better than what Smart says it can achieve - how can that be possible! Normally it's the other way round - e.g manufacturers will claim it 50mpg, in real life it's normally 20-30% less (if you're lucky)
My 1.3 Pulse (semi-auto petrol) is getting between 45 - 55 mpg :)
I think Smart says combined mpg is 47mpg
I wonder how this compares to others
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I think it is quite safe to assume that any 'combined' fuel figures
will be based on a 50/50 basis...half urban, half motorway,
so on that score the figures you are getting are bound to be
better than the official Smart figures.
My daughter's 1.3 Passion AMT gets between 35-40mpg urban
and often well over 55mpg on the motorway...if she drives to the
posted speed figures.
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I have got 50.7 mpg using paddle shifters on my 1.5 AMT
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don't think iv ever managed more than 47mpg out of my SB3 (I have has an anomalous result of 59mpg but that included a partial fill) but saying that majority of my driving is motorway (40 mile round commute to work and back home)
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A good run to Gatwick and back.
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Definitely had 57.6mpg+ out of mine. This was the day I went to London and back to get my steering wheel as I recall.
(http://wirralsmarts.co.uk/_photos/other/mileage.jpg)
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Did 57.5 mpg today on way to Bristol, 1.5 AMT.
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summer milage 52 on a tank- I really like summer in the 1.1
Brab is still a bit less ;D
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The best that I have recorded on spritz-monitor with my 1.3 petrol is:
5.04l/100km
46.66956019 mpg, m/g (miles per US gallon)
56.04780483 mpg, m/g (miles per UK gallon)
It really depends on do I drive just urban or motorway, the most efficient speed is 70km/h, (43.5 mph), if you drove whole way with that speed you can go as low as ~4.4l/100km, 53.45785985 mpg, m/g (miles per US gallon) 64.2002128 mpg, m/g (miles per UK gallon)
With ethanol the variation is even more huge :3
Other tip: for me driving on 4th gear with speed between 80-105km/h is more efficient than driving with 5th gear on that speed. 60-80km/h is more efficient with 5th gear and after 105km/h it is again more efficient than 4th gear. (Based on Torque app's instant readings from OBD port)
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Must admit it was for about 25 miles of road work's at bang on 50 MPH. ;D
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Today was a driving day. About 300 km (186,4 miles), mostly on highway, avgerage speed 120 km/h (74,5 mph), with top speed 155 km/h (96,3 mph). "She ate" about 7l/100km (33,6 mpg). Air con was on all the time.
I think it's a little bit to much for what I was expecting.
But, overall, "she" managed to do "her" best and the road trip was all fine.
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7,4L with SummerTires
7,8L with WinterTires
99% City.
Outside of City about 6,5L on stable 120-130km/h
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E85 (ethanol): 1.3l, manual, winter tyres: 8 to 8.5l / 100km combined. Calculated Expected value: 7.8l/100km. Tyres might be the reason, need to change soon to summer tires for lower roll resistance.
A bit downer but now that regular RON95 costs here blastering 1.7€/l and RON98 closing to 2€/l price range and Ethanol being 1.1€/l it is cheaper to drive with alcohol, for now.
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Pretty soon it'll be cheaper to fill up with chanel no.5, at this rate.
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Sorry for bringing this up again, but i am really curious...My newly bought smart forfour 454 1.1 (200.000 km on the clock) has managed only 7.1 l/100 km last month on the motorway. This could be either because the gas i put in was 50% water or the fact that the weather was too cold for Greece (3-4 degrees C) or the fact that i had reseted the ecu due to removing the battery. Yesterday, after a month of driving inside the city, i filled up and got 500 km out of 28 liters of fuel. Temperature was 20 degrees Celsious then. This is less than 6 l/100km in city roads which is unbelievable for a car of this age and with that kind of mileage. The only thing i can think of is that the guy who filled the car did not quite do it correctly (although fuel guege shows full, and is not faulty). Anyhow, my question is: Can the mitsu engine's consumption be so much related to the weather?
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Cold weather + high RPM on highway deffinitely increase fuel consumption. What engine oil is in yours?
If you have the patience to drive at 2500 rpm you will see the same <5L/100km outside of the city too.
Happy Forfouring!
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Yes, I totally agree Alex! In city driving I usually change gears quickly and go into 4th gear to move with 50-60 km/h, that's why I get such a good fuel consumption, while on the motorway I move with 3.500rpm to reach 120-130, so the car should be drinking a lot of gas. Good thing is that the car pulls really well from low end, so you can change 3 gears with less than 2500rpm.
If that consumption continues, I'm gonna love my f4!!
P.S I use 5-30 oil.
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In translation 7.1l per 100 is about 33 mpg. I get this out of my Brab and I get 45 mpg 5.1 l per 100 out of the 1.1.
Wirewalker - are the plugs, air filter etc all recent, Are the tyres the correct pressures? Is the throttle reset so that it is in tolerance ( see child boards)? Is the throttle body cleaned( child boards)? Is there a wheel hub running hot owing too brakes or bearings? Have you tried it on premium fuel ( or an octane booster)?
All of these can affect the Mpg figure but the style of driving and types of roads it is used on can have an even bigger effect.
The most important part is that you are enjoying it. There are a number of fans of the 1.1 on this site- it is a great engine. Happy motoring.
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what i used to do when i had my first 1.1, i would fill the tank and then see how far it would go, on the next fill i would try and go a little further before i felt it needed filling. i could manage 420 miles easily on a tank. i managed close to 600 miles (590 miles) but i was really pushing it and extreme hypermiling.
i really used to drive my first 1.1 hard and fill it with premium fuel (mainly shell v-power) and thats possibly the reason why it was really peppy and used to get good MPG.
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This week I managed 5.7 lit/100 km by driving in country roads with 80-100 km/h.
Nevertheless, I cannot celebrate though, since gasoline is 2.32 euros / liter in Greece right now!!!
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...gasoline is 2.32 euros / liter in Greece right now !!!
The price here in the UK has risen again (twice in a week) to more or less the same price.... :'(
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Well sorry for getting back to this, but have you noticed that the forfour's fuel consumption increases significantly when there is cold (like below 5 degrees Celsius). I know of course that all cars have increased fuel consumption on the winter, but I noticed a 20% increase from my 1.1. Whats is your experience?
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i used to get 420 miles to a tank regardless of how i drove it, when i drove it and what temperature i drove it in