Le Mans: Prototype Class
Join Date: Feb 2005
Location: Chesterfield, VA
My experience has proven 1,000km on a tank is possible with a Mazda 3.
I have surpassed that mark twice with my 3i w/o running out of gas.
1,000km = 621.4 miles.
621.4 miles/14 gallons would require averaging 44.39 mpg
Note: The fuel tank in the 2nd-generation Mazda 3 Skyactive 2.0 L is rated to hold 14.5 gal.
On one tank with my 3i I managed to drive 626.0 miles on 13.4 gallons (46.7 mpg), and for another tank I managed 624.2 miles on 13.86 gallons (45.0 mpg)
I've also calculated a partial tank average of 56.1 mpg, based on 204.5 miles driven on 3.644 gallons during a relaxed trip driven in mild temperatures along mostly flat coastal roads with very little wind while limiting my maximum cruising speeds to ~55 mph.
Note that these results were with a 2005 3i 2.0L engine which lacks VVT (variable valve timing) & "Skyactive Technology".
That said, I doubt if many Skyactive owners would be be willing to drive conservatively enough to manage 1,000km on one tank.
But I'm confident that doing so IS possible!
2005 Mazda 3i, rally white, 2.0 liter 5-speed manual, a/c and power package, 16-inch factory alloy wheels, 3M clear vinyl film, wing spoiler, CDT EF-61CV 6.5 inch speakers, ScanGauge II
1999 BMW 323ic convertible 2.5L I-6 (my midlife-crisis car)
2008 Kia Rondo LX 2.7 L V-6 (wife's car/family vehicle)
Last edited by cdtmazda3; 08-16-2013 at 02:10 PM.