723.4 km, 40.49 litres. Down a bit from last time. Didn't get the oil changed but I did get new tires installed. If running Nokian WR's reduces the mileage over the old rock-hard Michelins that's just going to have to be the way it is... I also installed the new front springs (Springtech). Lowered the front of the car about an inch, and because they're higher rate, the ride is noticeably firmer.

Got gas tonight. 759.5 km on 40.325 litres. I have to do an oil change pretty soon so I'll try Mobil 1 and see what that does.

I bought an Echo earlier this year in order to reduce the cost of commuting (compared to my daily-driver 2000 Tundra)... I live about 15 km from work and doing that twice a day, plus running around to pick up the kids, adds up. So far I've had to fill it up three times.

First tank, I got 720 km on about 40 litres. That works out to 18 km/litre, or about 40 US MPG, or 5.55 litres/100km.

Second tank, I went 735 km on 41.6 litres. Midway through this tank I changed out the air filter.

Third tank was mid-grade gas (89 octane RON/MON average) and I went 745 km on 41.07 litres.

So mileage is good... how to make it better? I have some lowering springs for the front (already installed some on the rear, dropped the car about 5/8 in.). Lowering the car may cut the wind resistance profile a little, and since most of my commute is done at 80 to 100 km/h that's going to matter. Synthetic lubes will start going in as I do maintenance (current odo reading is about 60,000 km) and from past experience with the Tundra that may make 5% difference. I'll keep posting mods/mileage as things develop...