I am wondering if it is common for these engines to start burning oil if they are pushed too hard?
I'm on my second 16v engine..I've noticed with both that to get to 70mph, I hit a wall so to speak.
My first engine failed on emissions...in the run up, 'performance' was a lot higher, but only after many months of 'pushing' the engine on dual carriageways, eventually getting to a point where speed was no barrier, from having been a serious barrier earlier on. I (once) reached 83mph

How likely is oil consumption for this, and should speed be limited under motorway conditions?