Wednesday, March 30, 2016

Measuring the fuel economy of my 2007 Aurion AT-X

Aurion Dashboard

“With great power comes great fuel bill”.

When I bought my car, I did not think I would have to drive it a lot. I still believe that is the case. Everything is accessible within 5 minutes to from where I live. Work, supermarket, shopping centre, hospital…pretty much everything.

But as I wrote in my last post about getting my driving license, I had to drive a lot more than I expected to. I am fine with that – in fact, I am very pleased to have been able to drive the car a lot in the past few days. I was able to take a good look at various roads and areas. But more importantly, I was able to take a look at the fuel consumption of the car.

I knew this would not be an economical car. You cannot expect it to be with a 3.4l engine. But I wanted to see how optimistic the 9.9l/100km figure in the specifications was. It turned out that it was slightly optimistic. Here are my results.

  Distance (km) Consumed fuel (litres) Fuel economy
Result 1 197.9 21.60 9.16 km per litre
Result 2 326.1 33.50 9.73 km per litre

But you should know that I drove a lot in the small roads to explore the area in Broadmeadows as well as nearby. I also did not take the freeway even when I could, just to get a feel for the different roads. But this should be a good “average” figure as I drove on fast roads (80km/h to 100km/h) as well as slow ones (40km/h to 60km/h) during this span. Manufacturers always quote specs that are very hard to match in real world, because most of the times they measure them in well controlled environments. Also, my car has done quite a lot of miles anyways, so it should not be working as efficiently as it originally did. Considering all that, I think I should not be too worried about it the engine performing less efficiently than it should have.

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