Guys, check out my MPG!!!
12-17-2011, 09:17 PM
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My Ride: 2004 545i Platinum Silver Metallic Gray Dakota Leather, Premium Pack, Premium Sound, Logic 7, Sport Pack, Navi, PDC, Sunshades, Cold Weather and HUD. 56k miles Feb. 2011
So, bought my e60 about 6 months ago.
Averaged 42mpg over a tankful over the summer months. Noticed it dropped to 38mpg in the last two months, but put that down to the colder weather. Then I saw a swarm of people complaining about their operating temperatures only being around 65-70 degrees. Checked out my operating temperatures and it was only 75 degrees even after a long motorway run.
Decided to change EGR thermostat as it only needed an hour to do. Boom, operating temperature instantly increased to 83, me happy. Combined MPG still stayed around 38 though, still thought it was the colder weather. Then, a couple of weeks later, the MPG suddenly shot up, and I was now doing 47+ MPG, even at 80mph! For a few days I was bemused and thought maybe I was going downhill a lot, or maybe the wind was blowing in my favour. But then, it HIT me! I realised just a few days before the MPG shot up, the car did a regen. And then I realised it probably hadn't done a regen in 3-4 months, since the summer and that slowly the DPF must have been clogging up.
BUT, it doesn't stop there!
That 47MPG figure was a combination of the older figures when the car was still doing 38MPG.
So, the time came to fill up the tank. I brimmed it and reset both on board computers. The results? Well, see for yourself:
Attachment 129013
The left hand computer are the figures that were obtained after joining the motorway and resetting it. The right hand computer are the figures I got after resetting it when fueling up in town and not touching it at all. Those figures were after 15 miles of town driving and 55 motorway miles. Still, 61mpg is pretty impressive.
Before, I'd get an estimated range of 500-600 miles, now I have 891 miles!
In hindsight, I've always managed to outdo the manufacturers stated mpg figures, and once again, this car is no longer an exception! Boom!
Averaged 42mpg over a tankful over the summer months. Noticed it dropped to 38mpg in the last two months, but put that down to the colder weather. Then I saw a swarm of people complaining about their operating temperatures only being around 65-70 degrees. Checked out my operating temperatures and it was only 75 degrees even after a long motorway run.
Decided to change EGR thermostat as it only needed an hour to do. Boom, operating temperature instantly increased to 83, me happy. Combined MPG still stayed around 38 though, still thought it was the colder weather. Then, a couple of weeks later, the MPG suddenly shot up, and I was now doing 47+ MPG, even at 80mph! For a few days I was bemused and thought maybe I was going downhill a lot, or maybe the wind was blowing in my favour. But then, it HIT me! I realised just a few days before the MPG shot up, the car did a regen. And then I realised it probably hadn't done a regen in 3-4 months, since the summer and that slowly the DPF must have been clogging up.
BUT, it doesn't stop there!
That 47MPG figure was a combination of the older figures when the car was still doing 38MPG.
So, the time came to fill up the tank. I brimmed it and reset both on board computers. The results? Well, see for yourself:
Attachment 129013
The left hand computer are the figures that were obtained after joining the motorway and resetting it. The right hand computer are the figures I got after resetting it when fueling up in town and not touching it at all. Those figures were after 15 miles of town driving and 55 motorway miles. Still, 61mpg is pretty impressive.
Before, I'd get an estimated range of 500-600 miles, now I have 891 miles!
In hindsight, I've always managed to outdo the manufacturers stated mpg figures, and once again, this car is no longer an exception! Boom!
For example, if trip meter shows 250miles, #gallon filled up is 14 gallons, then your MPG is 250/14=17.857
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