Quote:
Originally Posted by Screwdriva Hi sushil!
I'm a little surprised by your FE readings, I must admit. It sounds almost too good to be true for a 2.0 liter mill. Are you driving at a constant speed and / or feathering the throttle?
I was told to expect 11kmpl in the city and 15 odd on the highway best case when I visited the Skoda showroom |
Indeed, I too am surprised by these figures. They are from what the instruments on the car, were tealling me. But, these are now beginning to match, from the tank to tank figures as well. Actual receipts from the fuel pumps used to calculate the FE. While driving the Jazz, I find that car instrumentation can optimistic by upto 7%. I find the error is far less for Yeti. But it is too early to say.
I am pretty light footed. I accelerate gently, and then drive at, as constant a speed as possible. Shift to next higher gear early (without loading/straining the engine). On Yeti I find that my gear shift is generally what its computer also wants. Yeti would normally provide recommendation for two gears. I find my self generally in the higher of the two recommendations, except when I am planning an overtaking manuever or I can visually see a hill/climb ahead, which Yeti's computer obviously can't. I don't really accelerate hard unless essential - say while overtaking on a highway. On expressway I set speed warning buzzer at 100 kmph and try to stay at 90 kmph indicated. On other highways caution signal sounds at 90 kmph.
When in city I plan to avoid rush hour traffic and take routes that are not congested. I look ahead, maintain distance from the traffic in-front and plan to reduce or increase the speed gently. I don't tailgate and if find an impatient driver on my tail, give him/her way - and a wide berth. At redlights, I tend to turn the engine off, if the wait is anything beyond 15-20 seconds.
When I go to drop my son to college at 0645 AM in the morning I get FE of 19 km/l on a 22 km round trip. Through the day, it deteriorates to about 15 km/l to 17 km/l.
Another contributor to good FE could be that I am travelling alone or perhaps with two persons, most of the time. A rule of thumb for Yeti would be: for every additional weight of 100 kg, an additional 1 litre fuel per 100 km. So for example a FE of 25 kmpl equals 4 litres/100 km. For a fully laden Yeti (an additional 200 kg), the FE would drop to 6 litres/100 km, which translate to about 16.6 km/litre.
Similarly, hard acceleration and continuously keeping the RPM above 2,000, would also affect the FE.
Short trips consume more fuel. Here's an explanation.
A cold engine consumes nearly twice as much fuel as the one running at normal temperature (90 degree coolant temp for Yeti). Yeti's engine likes to run at a coolant temperature of 90 degree celsius. In morning it takes nearly 10 km to reach this temperautre from 15 degrees C. Four kilometers later it is at 75 degrees. So anyway the vehicle is consuming fuel at a fairly large rate for the first 4 - 5 km, and then gradually improves further over next 5 km. Therefore, any trip of less than 4 km on a cold engine will impact FE adversely. And so many of us make several trips less than this distance each day.
I suspect, I am going off-topic here. So I'll restrain myself.
FYI, I leave climate control permanently on at 22 degrees with adaptive recirculation. So my figures are with A/C left permanently on.
It is thus possible to get FE upto even 25 kmpl on a lightly loaded Yeti on highway and a light footed driver, but it could equally easily drop to 15 kmpl or even less, for heavily loaded car and enthusiastic driver - who is mesmerised by the sheer power with which the Yeti tempts anyone behind the wheel. Yeti is powerful and continuosly prods you its drive ever faster. It can easily smoke most cars - and SUVs you'll see. If you fall prey to this temptation, the Yeti will be quick to extract its price in poor FE.
The game is set even more unfavorably, for the unwary driver in the City, where the Yeti is capable of darting in and out of tight spaces, accelerating and smoking one and all, flitting about in its elements. I am not surprised that the gentlemen (and women) at the showroom only managed 15 kmpl on the highway and paltry 11 kmpl in the city.