97 BMW Z3 1.9 bogs down. looking for common issues!!

I think your power "increase" is coming from revving the engine higher.[/QUOTE]

If I'm going 65mph in A mod and accelarate all the way the car will shift down but won't speed as it should. But in M mode in 3rd gear at the same speed it seems the car goes faster!!

After searching online I found out the car is made weak/slow, I have seen better 4cyl then this on other cars, lots of ppl say the car is slow no much power with those 4cyl, I sold the car now hoping I get 6cyl with stick shift or Grand prix GTP. I thank all of you with all the help and great tips.

The 4-cyl was never fast, and one that is saddled with an automatic and run for 200,000 miles must really be slow. However, I drove a manual 6-cyl and a manual 4-cyl while I was shopping for a Z3, and bought the 4-cyl. Both had about 33,000 miles, but the 4-cyl was in better condition, and most importantly, felt light, peppy enough, and easier and therefore more fun to drive. I have no complaints about the power of the 4-cyl.