When did it become slow? Well before the 2010 4Runner could run to 100km/h about 2 seconds quicker.
Jeep was always the best performing SUV's....
Mid 6 second range 0-100k in the 90's with the 5.9L V-8..
8 flat with the 5.2L V-8..
9.5 with the 4.0 6cyl....
These years Toyota was 11-16 second 0-100km/hr..thats if the toyota's head gasket held up !! Big problem !
The bigger,heavier 1999-2004,
High 6 sec with the 4.7 H.O
4.7 V-8 was 7 flat.
.8-9 with the 4.0 L 6 cyl..
The even heavier 2005-2010 Grand Cherokee,
3.7 V-6 around 9.5 sec 0-100..
4.7 low 7 sec 08-10 and -8 seconds with the 4.7 of 2005-2007
5.7 Hemi high 6's low 7's.
6.1 HEMI 4.5 0-100 !!! Fastest period !!
The even bigger/heavier 2011
8 sec 0-100k,Road Tests for a Durango was low 8's so I would assume the v-6 Jeep would be the same .
high 6-low 7 sec 0-100 k with the 5.7 Hemi
Future 6.4 Hemi SRT 4 second range for sure !!