Took the TL-S up to 121mph, via GPS verification, Garmin C330, and i must say that the speedo is dead nuts accurate to within 1mph or 2. Never really stomped on her, open stretch of road, so i turn off the AC, paused the cd and floored it. Mind you the car is all stock, engine etc., she just clicked over 120k on the way back. Had more to go and i was pleased that it didn't short shift like some auto's do.

 

I did that myself not that long ago and had mine up to 130, mine was pretty accurate too. spedo showed 130 and gps was showing 131

 

i got to get me a GPS...