Stitch said:
They don't have same gear ratios though.
According to BMW USA:
X3 3.0i:
Automatic gear ratios - I/II/III 3.42/2.22/1.60 :1
Automatic gear ratios - IV/V/R 1.00/0.75/3.03 :1
X5 3.0i:
Gear ratios - 1st 3.42:1
Gear ratios - 2nd 2.22:1
Gear ratios - 3rd 1.60:1
Gear ratios - 4th 1.00:1
Gear ratios - 5th 0.75:1
Gear ratios - Reverse 3.03:1
Looks the same to me...
0-60mph time (auto):
X3 3.0i: 7.9 sec
X5 3.0i: 8.3 sec
Specs:
X3 3.0i: 225 @ 5900 hp/ 214 @ 3500 lb-ft
Bore/stroke 3.31/3.53 inch
Nominal output/rpm 225/5900 hp
Max. torque/rpm 214/3500 lb-ft
Compression ratio 10.2 :1
X5 3.0i: 225 @ 5900 hp/ 214 @ 3500 lb-ft
Bore/stroke 3.31/3.53 inch
Nominal output/rpm 225/5900 hp
Max. torque/rpm 214/3500 lb-ft
Compression ratio 10.2 :1
How can an X5 3.0 have more power but yet have a slower 0-60 time than an X3 3.0?