:confused: i got my fabia vrs about a month ago. its a o4 plate so its not new but i cant seem to get above 45mpg no matter how i drive it. ive heard that it could go as high as 55mpg. so whats wrong?:confused:

daz

:confused: i got my fabia vrs about a month ago. its a o4 plate so its not new but i cant seem to get above 45mpg no matter how i drive it. ive heard that it could go as high as 55mpg. so whats wrong?:confused:

daz

What sort of journeys do you do? Is the car standard?

46mpg would be normal if you only do short (under 10 miles) journeys, especially with this cold weather - the engine takes longer to warm up, and you tend to use more electrical systems etc...

Also, checking tyre pressures regularly is very important. I do 50:50 long runs and short trips, so keep them at 34PSI all round (nice and easy to remember!)

the last trip i did was well over 300 miles and all motorway. still only got 45mpg. begining to think that the car might have had one of those tuning boxes on it from before i bought it. im having problems stopping it wheel spinning due to getting harsh power supply!

daz

depends on your speed on the motorway, on some journeys I can average as little as 34mpg though to be fair it doesn't happen that often.

What revs are you at when you cruise?

What tyres are you running? (Sorry, Tom, had to ask )

Also, are you driving the car like a diesel, or revving it like a petrol?

Chris

Tend to agree with Chris- if your wheelspinning it off the starts then little wonder fuel economy is suffering. Try not to rev the engine as much with a diesel- infact if you gently ease the clutch off it will move with no throttle applied. A wee bit lighter with the right foot should help. MPG in a diesel is as much about how you drive it- I can get better milage in my Fabia than any of the other people who drive it.

Apart from that run a few tanks of Shell Diesel Extra through or similar (BP Ultimate, Millers), see if it cleans the engine and improves the performance, rather than supermarket stuff which can vary in quality.

My summer mpg is about 50-55 mpg.

However.......

During the winter months this drops to 40-45 mpg, primarily due to the engine taking longer to warm up, and hense injecting more fuel in to it to compensate.

(The fact that you've generally got lights on, heater on etc at this time of year doesn't help)

Don't worry it will get better (and so the cycle starts again)

Speed makes a big difference too in my experience. If I cruise at 80mph then I tend to get about 50mpg on the motorway whenas if I tootle along at 60mph this increases to over 70mpg.

Is this your first diesel? They require a very different driving style. The 'harsh power supply' is almost certainly just the turbo cutting in. I find I get the most economical driving by keeping the revs under 2k as much as possible (although some seem to find it less economical at this rpm range). I find it helps to have the instantaneos mpg display on - it's amazing how a slight throttle movement (with no great effect on power) can increase your mpg significantly. Over a long journey this could make the difference?

My engine isn't special either, as has been mentioned, these cold mornings mean I have the a/c on, the rear demister, headlights and blower on 3 or 4. Add to this the hilly area and I get about 35mpg to work (3 miles).

Which brings me onto my final point . . . how hilly is it where you live? Hills really decrease mpg - it's quite alarming actually in my experience. I can get at least 50% more efficient journeys heading west onto the Cheshire plain than I can going into the Peak District.

Hope this has helped!

I managed a freekishly high 57.5mpg on one 100 mile round trip recently. I say freekish, as my mpg averages pretty much bang on 45mph. I've a 50 mile round trip to work compiling of a-road/dual carriageways, with about 3 miles town. However, It's generally kept between 2k and 3k, so I guess 45mpg isn't so bad! :P

It is my first Diesel, and I've spent two years riding motorbikes! Time to get into TDi mode!

:confused: i got my fabia vrs about a month ago. its a o4 plate so its not new but i cant seem to get above 45mpg no matter how i drive it. ive heard that it could go as high as 55mpg. so whats wrong?:confused:

daz

Set the multifunction display to instantaneous MPG and you'll see that acceleration (even mild) can greatly reduce the MPG. Unfortunately the acceleration can be addictive... .

Check your tyre pressures. What make of tyre is fitted?

I'm on Continental Sportcontacts (or 2s). Front tyre pressures are a couple of PSI over book (ISTR 34). I'm averaging 44+mpg. Best tankful was 47+.

J.

I get 40+ MPG on the motorway at 85mph. There seems to be an "economy point" where the Variable valve timing comes on song.

EDIT: My car is a remapped 1.8T PETROL

cheers for the advice. yes this is my first diesel so my driving is probably to blame. im running the car on the standard tyres it was sold but am in need of a change soon. any advice. too be honest i can live with the 45mpg - its a far cry from what i was getting in my octavia 1.8 20v. just need some tyres with good grip then!

daz

The technique is not different between petrol/diesel when driving for economy - drive PROPERLY, use overrun rather than brakes and leave a safe distance so you're not stop-start on the go-go pedal.

PS I got 67mpg out of my works' 5 speed Superb 1.9tdi (130) from Guildford to Leicester today and did the journey in just over 2 hours - it is possible to get good mpg without driving like a girl

...............as has been mentioned, these cold mornings mean I have the a/c on, the rear demister, headlights and blower on 3 or 4. Add to this the hilly area and I get about 35mpg to work (3 miles)........................

I do about 4 miles each way with a mile of that often sat in crawling traffic and these last few weeks with electrical systems working away have seen down to 34-35mpg.

Sat in traffic for 50% of the time on such a short journey even in the warmer weather you'd be lucky to see 37/38mpg out of a vRS. On warm traffic free days I've seen 43-45 for the same short journey.