Thread: Puma fuel economy

Originally Posted by Naks

I struggle to get 450km out of the main tank these days - just goes to show what driving 3km to work and back does to the fuel economy

If you do a lot of stopping and starting which involves a lot of first gear use the fuel consumption does suffer. I have two 2.4 Puma's and both do significantly better fuel consumption wise on long journeys at 80 - 100 kms.
Fuel consumption can be a guide healthwise as to the health of your engine. If your consumption starts going up with normal usage you know you have a problem somewhere. So it does pay to keep an eye on the consumption in a general sense.

I will get 500km out of a tank. Might be lucky to get 530km's.

On long trips I wouldn't get over 105kms, but average a 100km's easy.

A modern engine should be able to do 105km's/hr efficiently I think.

I monitored instantaneous fuel consumption today with Ultragauge. on 2.2 130

On a flat road at a steady 100 k/h : 5th gear the value stabilised around 11 litres/h

6th gear used about 9 litres/h

To get stable readings I had to drive the throttle very carefully. Since I dont usually make careful adjustments intentionally the values are probably lower than "normal" driving

Originally Posted by voltron

I will get 500km out of a tank. Might be lucky to get 530km's.

On long trips I wouldn't get over 105kms, but average a 100km's easy.

A modern engine should be able to do 105km's/hr efficiently I think.

It's the box shape that determines fuel use not the motor,I feel the TDCi uses more fuel simply because the extra performance allows for higher speed. Pat

Have been reading what you guys have written and I am there or thereabouts, until my last trip. 32l/100 towing a 2t camper at 90-100km/h dirt road and bitumen.
I made a point of filling before leaving to track the fuel usage. I knew it was bad but nearly fell over when I did the figures on my return.

Any clues? I have been contemplating tweaking it. This trip will help my cause.

Pure arsed guesses:
Trailer brakes not binding or other defect?
In too high a gear and engine lugging. I imagine with 2 t behind you want max torque, rather than min revs.

Good luck

Originally Posted by Holmesy68

Have been reading what you guys have written and I am there or thereabouts, until my last trip. 32l/100 towing a 2t camper at 90-100km/h dirt road and bitumen.
I made a point of filling before leaving to track the fuel usage. I knew it was bad but nearly fell over when I did the figures on my return.

Any clues? I have been contemplating tweaking it. This trip will help my cause.

I think you need to check that figure,around 14 per 100 is about right for that type of driving,or you have a hole in the tank.Mine did 542k's with 58ltrs this weekend. Pat

The thing about the figures based off the speedo is that the speedo seems to be out by about 5-8km depending on what speed you do. I find 105kms/hr is doing 100 on the gps.