Renault Repair Questions? Ask a Mechanic for Answers ASAP
Hello, my name is Mark and I will try help you with this?
What engine do you have?
The engine is a 15.00cc
Hi mark. Terry here.
a office worker with the car supplier told her the cold weather has an effect on fuel consumption.
she too has a 15.00cc Renault.
This company has a new supper supper computer they advertise this on Tv. so I'm booked in on Saturday.All I hope the guy operating it knows what he's doing.
My ex-renault grand scenic was returning 60+ mpg. same size engine heaver and a it was a 7 seated.
Do you know what power output it has?
Ah you have me there
What tax band is it in?
B C or D
It's a motorbility car
I mean for emissions
If it wasn't a mobility car, what tax band would it be in?
Oh.I think it's B the lowest
But your not 100% sure
Does it have stop/start technology?
all the paper work is in the car which is in my garage 200 yards fro the house
yes to stop/ start
So when you come to a junction or red light the engine cuts out?
Do you know how the consumption figures are calculated?
not a clue
Like most people
I will give you a website where you can read how it's done.
regarding fuel consumption I think 39 is rubbish I could have bought a tractor with better
The thing here is to remember manufacturers will use almost any method to lower the emissions for tax reasons.
Whether the car will actually achieve those figures in real life driving.
The consumptions figures are calculated on a rolling road, with no wind resistance and an average speed of 19 mph
my mate has a Pergot [ spelling?] doing a constant 56..5
They also will not test a car until the engine has been run in.
Yours is barely run in.
I'm comparing this 39 with my 60+ on the Grand scenic
How did you determine your consumption figure?
on the cars on board computer
Because the way it works.
What else does the computer tell you
fuel con.= distance travelled milage left in the tank
All based on averages from the last reset.
Do you normally run on a full tank?
Yes….I never allow it to fall below 1/2 full
That is also a problem
You are carrying extra weight
What you need to do is fill the tank to the absolute maximum.
no usually there's only my self perhaps my mate some times
I fill to the top
The weight is in the fuel
When the car is tested the cycle is for only 4 miles
They carry the minimum fuel required.
Run the car for 100 miles and really nurse it. No hard acceleration, no hard braking.
Then refill the tank to the max and then work out how many miles you got for the amount of fuel you put in.
that's my usual style of driving I'm elderly cruise control on the duel garrageway
You then need to add at least 15% of the miles to this figure because of the weight of a full tank of fuel
Read what I am saying.
I'm still confused why my mates car returns 55 and mine a miserable 39
Because you are looking at the computer and not what it is actually doing.
OK I'll recalculate using your advice
I'll tell you what to to do.
Next time you fill up. Fill to the max. Reset all the computer readings to zero and then take the vehicle for a run on the motorway. Try not to exceed 55mph. Try to use cruise control as much as possible and leave the computer on actual mpg reading so you can see what you are actually getting at that precise moment in time. You will be surprised.
OK Mark. thanks for you time and help. I bid you good night.
Click on the link above for some night time reading lol.
Did the link work ok?
Please remember to rate my assistance.
Yes the link worked and you'll get a good "school" report !!!
What do youth say….no probs.
Thanks for thinking I'm a youth
cheers mate say well…………..Terry.
Been in this game 35 yrs
still a youth I'm bordering 80years.
I'll give you that one.
Cheers and I'll say good night and thanks again.
You forgot to rate my assistance
I don't get paid until you do. :(
Hi Terry. You can rate my answer by clicking on the smiley faces.
Do you need any further info Terry?