I bought my 2009 Mazda 3 iTouring new, taken it to the snow, dirt mountains for camping, high elevations, trips to Vegas and Utah and have had ZERO problems with anything mechanical. I seriously have never felt so safe and comfortable in my car. I'm @ 65,000 miles
The following is only in relation to me and my Mazda,:
Maintance is typical, I do my oil change every 3-5,000 miles and tire rotation depending on where I have driven too.
Stock brakes sucked, they needed replacing for me @30,000 miles, which is weird since a lot of my miles are freeway/highway
Stock tires were aweful, replaced those @ 20,000..Goodyear tires have never been good to me so I put Kuhmos (sp?) and they are still going 45,000 miles later

I still don't need to do any fluid replacing or tune-up.
My alignment has always remained very good.
I don't know what else to say.