My vehicle is 4 months old as of today. And the odo reads 7789 kms.
After my initial trip in the safari in August, I did not get to take it out at all during the whole of September, save for the occasional outing within the city during the weekends. But this was more than compensated by the amount of driving done during October. So I have averaged around 2500+ kms/month in the 3 months of actually using the safari.
No issues with the vehicle whatsovever so far. Period. Yes, no niggles, no rattles, nothing. And I am happy. Because most of the driving has been on long distances and plenty over bad roads. And possibly because I expected worse from TM, I suppose
Well, there was this one thing in between. And it was due to my own doing. I had not actually checked the mileage on the vehicle till I completed 2,500 odd kms. My relations were to arrive at the then new airport in bangalore and I decided to use the occassion to check the mileage. I topped the tank to auto-cutoff at an Indian Oil pump on Old madras road and headed off to the airport. Refilled at the same pump upon directly returning from the airport and after completing around 100 kms.
Checked the mileage and got a jaw dropping, stomach turning figure of 7.3 kms/litre. I got a bit upset I tell you. Because there was practically no traffic in this entire stretch, that too on a sunday morning. I explained to myself saying this was probably because of the a/c.
Over the next weekend, I got an opportunity to test my hypothesis. Went on a trip to Kolar Gold Fields. I subjected my folks to the heat and didnt use the a/c at all. I check the mileage confidently hoping a much more reasonable figure. But alas, the calculation returns 8.4 kms/litre.
Over the next week till I got time to take the vehicle to concorde, I checked the mileage on the daily office-home commute on MG road traffic with the a/c on. I average around 7.4 kmpl. That didnt make any sense to me. After all, how could both MG road traffic conditions and highway conditions return the same mileage.
So I call up concorde and speak to the service manager, Mr. Murlidharan. He sounds perplexed on the phone and asks me to get the vehicle immediately.
They first check the vehicle with the diagnostics laptop and dont find anything. Then the quality head comes over, checks the clutch and says it doesnt feel fine. He does some setting, commenting that this should not have affected the mileage so much.
Then we head off on a mileage test drive. Fill up, and we wind our way through hosur road traffic, on to anekal and back, passing via electronics city. All this time, I am sitting and observing his driving style. He is rash, and am gloating to myself, let the bugger see what mileage he is getting. We refill and I find the damn man gets a mileage of 12.47 kmpl. Am impressed...
So we decide to retrace the route with me behind the wheel. I say to myself, what the hell. Lets give it like he did.
We return and refill. My mileage is 11.30 kmpl. I am very happy and also feeling very stupid.
I realised the fundamental differences in our driving style. For instance, the guy did not see the speedometer when changing the gears. He changed the gears only when the tacho approaches 3000 rpm. Yes. And here I am following exactly what's given in the manual.
I have a chat with him, and he gave me a few pointers. He says I press the accelerator too much after changing gears, making the vehicle pick up faster (signal start stop) but also increasing fuel consumption. Second, I change the gears too early and this is possibly because I was driving a petrol car earlier. It seems diesel vehicles have to be driven differently with respect to changing of the gears.
Thirdly, I was driving at above 110. He said the maximum mileage is obtained between 100-110 kmph.
Since then, my mileage has improved dramatically. On a recent trip from Chennai I filled in at the BPCL COCO pump in Thirumangalam/Mogappair West and refilled at the BPCL COCO pump after Krishnagiri. My mileage was 14.37 kms/litre. Not bad ehh?? Of course, this trip was without a/c completely. Granted, it was at different pumps. But even accounting for that, the mileage should not have been lesser than 13.5 kms/litre.
My technique was to change gears around what ought to be 2600-2700 rpm. And maintain it at around 2250-2500 rpm in the fifth gear. That translates in to a speed of around 100-110 kms/hr. I use only normal diesel with System D at the suggested rate of 1ml/litre of diesel.
With really bad driving and a/c on, I get 11+ on the highways.
Unfortunately, I am still unable obtain the city average of 9.5-10 as claimed by most owners on the forum. I get around 8.5 to 9 tops within the city. But thats all right I suppose, because I do only around 500kms/month within the city. Most of my driving has been on the highways.
Maybe, I can get some city driving suggestions from other 2.2 owners in bangalore city conditions. Anybody doing anything differently with respect to changing gears and all?