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1.7 2012 mpg concern/problems

14K views 21 replies 11 participants last post by  hectorewan  
#1 ·
Hello. I have a Optima 1.7 manual with 62k. Car has dropped mpg to around 35mpg. I was getting 48 on avarage but as last few weeks it dropped. Tried resetting trip and have also carried out a 200 mile tank fill test and still comes back with 35mpg. No brakes sticking and car has been serviced with new fuel,air and oil filter and oil. No warning symbols or messages on the dash and car seems to be driving as it was.
Has anybody had similar problem?
 
#5 ·
Can't really compare, whilst they might have the same engine, the car will have different aerodynamic co-efficients, they'll certainly have different weights, and quite possibly different gearing ratios.

However, if it helps, the bulk of my driving was 26 mile each way commute, consisting of half motorway and half urban going, and all motorway coming back.

My 1.7 Sportage consistantly showed between 48 and 52mpg over a 5 year 60,000 mile period, with regular trip resets.

Diesels generally run more efficiently with cold air, so we couldn't attribute the drop to the winter weather.

Edited by: keat99
 
#7 ·
Hi All, just taken delivery two weeks ago of my 1.7 Axis (56 plate), have already filled up twice and quite disappointed with the economy.
Previous car wasa Mercedes GLC AMG with larger diesel engine and 4x4 and it was averaging high 40's MPG over two years. Usually 48 MPG.

I'm struggling to get above 40 MPG out of my 1.7 diesel ECO Dynamics Sportage. No extra weight, tyres properly inflated and new, no brakes on, never above 60 MPH, gentle accelerating and few hills near me. Even on a motorway cruise I only managed 44 and this came straight back down to 36 then next day.

My old 1.5 megane used to easily achieve 64 MPG, my 1.6 Peugeot 207 got 56 MPG; so I believe I am driving economically. Really expected to be able to get nearly 50 MPG out of this version. It was the main reason to buy this particular model. (Along with 7 year warranty).

Has anyone had any real better economy after getting a re-map?
 
#9 ·
Diesels generally run more efficiently with cold air, so we couldn't attribute the drop to the winter weather.


Diesels are less efficient in cold weather they take longer to warm up in normal weather and longer in colder weather especially if it doesn't be a pre heater fitted to it so a drop in mpg isn't unusual in any fuel type in winter and cold weather
 
#10 ·
So, who cares? You buy it, you drive it so why even bother to worry about the mpg? It's a car, a tin box, which goes from A to B. Just live with it. MPG is something that I've never , in 64 year of motoring bothered to think about. If I did I'd buy a pair of roller skates instead. If it does over 25mpg I'd not care a toss. But to worry about a few mpg seems so pathetic.
 
#11 ·
In the days of nearly ÂŁ6 a gallon, how far that gallon of fuel takes me is a prime concern in the car I purchase. Most of that ÂŁ6 is extra tax, I resent having to fill up !!! Our other car is electric, it is not so much concern for the environment, but cost per mile that helped us make that choice.We all bought the Kia based on certain facts; we aremostly disappointed that the economical version, 1.7 diesel, does not match the economy of other manufacturers vehicles in the same style.
Salesman states "You would expect to get over 50 MPG, in real term driving", actual figure is under 40 MPG.... This is disappointing !
 
#12 ·
Gobalot said:
Salesman states "You would expect to get over 50 MPG, in real term driving", actual figure is under 40 MPG.... This is disappointing !

You must be careful not to believe the mpg figures that some contributors to to car forums claim but if you believe anything a car salesman tells you, then I'm afraid there may be no hope for you!
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Fuel economy comes up time and time again in all car forums and has become the currency of all sorts of braggarts who just need to 'black cat' everyone else, always failing to acknowledge that no two drivers have exactly the same commute at the same time in the same weather conditions.

Technically, there's probably nothing wrong with your car.......it's your house and workplace that cause your problem! What you need to do is buy/rent a property about 200 yards from a motorway slip road and get yourself a job at a motorway service area about 20 miles further along the motorway, selling burgers or whatever. Using your car, without any alterations, on that regular commute should produce a huge improvement in your fuel economy.
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I don't charge for this useful consumer advice.
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#13 ·
Indalo said:
Technically, there's probably nothing wrong with your car.......it's your house and workplace that cause your problem!

That is a very interesting observation and one which brings back memories from my commute some years ago.

15 miles each way, a mixture of town, decent A road and dual carriageway, a majority was dual carriageway with the A road being 2nd and town 3rd. We lived at 600ft above sea level, work was at 100ft above sea level (according to OS). Used to take 45 minutes each way.

Trip to work would easily see a figure on the fuel confuser of 60+ mpg. Trip home would rearely see a figure over 45mpg on the same day in similar traffic.

During the 5 years we owned that car (1.6 turbo diesel mini MPV with 110PS) it averaged about 44mpg so when I read about people worrying when they get similar figures from a larger more powerful SUV I do honestly think they are being a little unrealistic.

The only thing you should do with salesman claims and the official MPG figures is ignore them.
 
#15 ·
Not sure what your criteria is for buying a car, but for some of society MPG is a huge part of which car to buy.
You are aware that nearly all of the cost of fuel is tax, diesel is actually very cheap. Anyone that's willing to pay extra taxes is more than welcome to in my book. So THANK YOU.
We all know that the method of obtaining the manufacturers economy figures is flawed, but we expect to maybe get nearly 80% of the figure if driving carefully. I bought the 2 wheel drive, 1.7 diesel with eco dynamics expecting to get at least high 40's as MP "Imperial" Gallon (4.5 litres). It is the only thing I have been disappointed with, great car otherwise.
I just wanted to know if others were getting similar economy, or mine had an engine problem; it seems that even though this engine is quite a modern one, it is just not an economical version compared with similar engines in similar cars. I have spoken with Qashqai owners with the 1.5 diesel engine (Renault), who actually get 60 MPG. I consider myself an economical driver, rather than a fast one. I'm retired, drive for pleasure and rarely in a rush. The less actual tax I pay, the better. PS Our (ordered) next car is fully electric, this will help with fuel costs as we have solar panels and wind generator at home!
 
#16 ·
I kept my last car, a petrol for almost 4 years and did 27,000 miles in at approx 45 mpg, total fuel cost was approx ÂŁ3600.After discounts and deposit contribution I paid approx ÂŁ15000, in PX I got ÂŁ7200 thus depreciation was ÂŁ7800.
Insurance cost me about ÂŁ1000 for 4 years.
Servicing was ÂŁ385 (ÂŁ11 a month for 35 months)
VED was ÂŁ90
My Total running costs were approx ÂŁ12875 thus fuel was approx 28%.

If I had bought the identical car with a more economical diesel engine it would have cost ÂŁ2000 more and possibly been worth ÂŁ1000 more in PX. According to Honest John Real MPG I should have averaged approx 53mpg making my fuel bill approx ÂŁ3000.

Keeping my other costs the same the more economical version would have cost me ÂŁ13274, ÂŁ400 more than the less economical version I bought.

There is far more to your overall motoring cost than your mpg figure.

Edited by: Acenta
 
#17 ·
Lancelot1937 said:
So, who cares?  You buy it, you drive it so why even bother to worry about the mpg?  It's a car, a tin box, which goes from A to B.  Just live with it.  MPG is something that I've never , in 64 year of motoring bothered to think about.  If I did I'd buy a pair of roller skates instead. If it does over 25mpg I'd not care a toss. But to worry about a few mpg seems so pathetic.
I understand what you are saying but I think it is a generational thing. I am of an age that thinks anything over 30 mpg is exceptional and I am happy if I get mid to high 20's.

Times (and expectations) have changed.Edited by: Techno
 
#19 ·
" Sadly there is little of that to be experienced these days, other than on a track day with a different style of vehicle.
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"

Not sure that I agree with that comment
Move north we have plenty of roads where high speed motoring/cornering can be enjoyed without the interference to, or of, other traffic.. Try the North Yorks Moors when it's raining.
 
#21 ·
Rednine43 said:
Sorry Techno, I cannot believe for a second that you actually believe your own post, unless you put pure driving experience and enjoyment above the importance of your wallet!
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Sadly there is little of that to be experienced these days, other than on a track day with a different style of vehicle.
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Actions speak louder than words!


You'll notice from my sig that we don't have the 47 mpg Sportage any more. It was swapped for an American SUV that averages 27 mpg.
 
#22 ·
My 2014 Kia sportage 2.0 crdi awd last year travelling from invernes to Aberdeen on the A96it's a 112 miles there and back I got an average of 49mpg to 52mpg and I was going slow that was good enough for me I have a picanto as well which I use for going around in town or short distance and easy parking to I don't really bother about how much you get mpg it's only a car if I worried about how much fuel it used I drive myself mad ˜Š Ewan