Mpg

[sean sherry]

Who can afford to put Petrol into anything else.............

Round trip to the Southern Highlands today, a mixture of Roads, with Air on all Day'
5 Litres per 100K = 56 MPG .......Mk 7 Turbo 1.4 Lt Golf.
Last week's run to Temora in SL 107 280.....21 MPH.

Both Cars set at 113 Ks ( Cruise Control ) on the Motorway.
And the Golf easily out performs the old Merc , which runs very well with K Jetronic

And the moral is ........... who needs a Diesel ?

 

[abl567]

Based on those figures I'm pretty pleased with 18mpg from 6.3 litres with mechanical fuel injection in a blunt fronted sedan weighing in at approx 2000 kg with 4 on board and luggage for 10 days

 

[Afro107]

Based on those figures I'm pretty pleased with 18mpg from 6.3 litres with mechanical fuel injection in a blunt fronted sedan weighing in at approx 2000 kg with 4 on board and luggage for 10 days

The thing is that full total permissible load on this car have little effect on l/km consumption.

Try that in a 4 cyl turbo.

 

[sean sherry]

Yes ...... also bearing in mind that most of the energy used to propel a car goes into propelling itself.

 

[Michel]

Yes ...... also bearing in mind that most of the energy used to propel a car goes into propelling itself.

Hence the difference between city and highway driving...

 

[sean sherry]

Do I believe the 56 MPG from my Mk 7 Turbo Golf ???

Not any more..... after researching the subject of inaccurate Speedometers and Odometers coupled with the Factory "adjustments " of the Fuel mileage read outs.
There are a lot of issues discussed on the Forums on the Net.

Call me niave , but I used to believe these read out !

My two Garmin Sat Navs show a big discrepancy to the odo readings on the Golf

Eg Garmin units both show 1 mile after only 6 or 700 metres on the trip.

Speed and odos are separately inaccurate from the same signal source !

Sat Nav distance estimation is as the Crow Flies , not the road distance.

I will test the odo on the SL next time I see the markers on the Motorway.

Meantime all bets are off !

 

[Styria]

Sean, I am somewhat confused, but your assertions or findings are quite remarkable. What does it all mean ? Are you saying that the Golf figures are inaccurate? Maybe you can clarify. Regards. Styria

 

[Afro107]

Not sure if fault is with satnav...

When looking up points, they are shown in as-crow-flies distance but when you calculate the route, this change to driving distance of the route.

The funny fact with GPS is that the faster you are, the accuracy improves.

 

[sean sherry]

Yes that may be the answer ...Accuracy improves with distance travelled.
I guess that the short measured distance I was using, 1 K, was not allowing the Sat Nav to settle in it's Software i.e., needing more input to accurately compute. The Trip readings on both the VW and the C Class tallied over 1 K.
So as you say, the estimated distance is Point to Point but when traveling the Route, the measurements are then Point to point say every 5 or 6 metres.

The speed display is accurate to 1KPH, ( from a Police Patrol Car and from Garmin. )
I guess that there must be an optimum distance before the recorded distance is accurate.
I know that the Service Intervals can be " manipulated " at Dealer level, so why not the consumption figures ?
The Jury is still out