Joined
·
445 Posts
Just took a 1200 mile road trip this last weekend, really paid attention to my MPGs (avg & instant). With cruise on 80, using 93 octane, I was getting around 19mpg with relatively no wind.
91 octane @ 80 mph = 19-20mpg
89 octane @ 80 mph = 17mpg (moderate side wind)
I am disappointed with this. For all highway, I expected to be 20-22mpg with ease!
When I first bought my D, I took a 500mi trip on first day. I drove a little slower for break in, but I initially got about 21mpg, not sure what octane initial tank was. On my way back from that trip, 89 octane @ 80 got me 19-20mpg. I thought economy should improve with some miles??? I have 6500 miles now, but it seems to be getting worse! Definitely best economy is 65mph, can average about 22-23mpg then. I am going to play with octane ratings...drop to 87 to see what it does.
Anyone else having similar ratings?
91 octane @ 80 mph = 19-20mpg
89 octane @ 80 mph = 17mpg (moderate side wind)
I am disappointed with this. For all highway, I expected to be 20-22mpg with ease!
When I first bought my D, I took a 500mi trip on first day. I drove a little slower for break in, but I initially got about 21mpg, not sure what octane initial tank was. On my way back from that trip, 89 octane @ 80 got me 19-20mpg. I thought economy should improve with some miles??? I have 6500 miles now, but it seems to be getting worse! Definitely best economy is 65mph, can average about 22-23mpg then. I am going to play with octane ratings...drop to 87 to see what it does.
Anyone else having similar ratings?