Hey there Mazdaspeed3 people,
I'm new here - Drive a 012 speed3, liquid silver with the obvious MZR 2.3L motor. 129000 miles. Bought it from a dealer- it was a trade, so don't know how the original owner drove it. Car has been kept stone stock - no mods here. Had to replace clutch year ago.
We purchased the speed 3 while it still has the remainder of the warranty in 2013 or 14, I guess.
It's my wife's daily driver, (Though she does not drive it every day), with most of the miles being in/around the city and slightly less than 10000 highway miles. So given an average of 13,500 miles per year per car in Pennsylvania, that's way less miles driven per year compared to the average. She tends to baby it with occasional full tilt turbo stress,(Nothing abnormal).
I get to drive it after any maintenance I perform on it - like a check drive, and I DO put it through it's paces. Otherwise, I don't get to drive it much, (Sucks to be me).
The car is using about 1.25 quarts oil per month. I can't give how much oil it uses per miles driven, as I am just now monitoring it, (I will post that in the future).
Oil does seep around the valve cover, (nice oil spots in the driveway) and there is no visible white smoke coming out of the tailpipe.
I use Amsoil OE oil and change it every 10,000 miles and consistently use Purolator BOSS filters - these were tested using specific apparatus on a popular YouTube channel and judged among the best. Up until 2 years ago used filters such as Mobil One and Wix XP.
Wild card: Very rarely burn "Top Tier Detergent Gasoline", just whatever BJ's sells.

With all that said → I need to know what constitutes excess oil consumption with the 2.3 Turbo. Is about 1.25 quarts per month too much?
Peter