My last Benz was a CLS63 AMG with the performance package. It was Bad Azz. Great style and when I got on it (well) it sounded like a NASCAR. It was expensive $128k+ MSRP, fast, etc.etc. MB AMG know how to build a expensive super car that is really expensive to maintain. $500+ oil/filter changes, at 7k miles $2000 brake job. All that background leads up to me stating that the CLA45 makes "NO" sense! Who wants a stressed out 4 cylinder that has a complex AWD system, that based on MB past reliability history can only be owned while under warranty and will cost a bundle to maintain. Same thing goes for the regular CLA compared to the ILX. Both are baby luxury cars. They are the same size. With the ILX you get Acura build quality and reliability plus a super low cost of ownership. The CLA will cost many times more to maintain and I would not want to own it if it was not under warranty. If you want to talk performance all the counts in this class of car is comfort and economy. 0-60 over 4.5 seconds is really all the same as long as you can move with the flow of traffic, other wise your talking one car being a little slower then the other 