I bought my v8 5.2 liter engine Grand Cherokee in '03 with 116,000 miles on it and I have had it for two years now with 127k miles. The performance, comfort, and looks are just excellent. However, the fuel economy is extremely poor. Driving in the hot summer days with A/C on I get around 12 mpg. As for reliability, I haven't had any major problems so far. Just one time the A/C broke down but my friend is a mechanic and fixed it at no charge.
Power, exterior design and comfort. Driving uphill in the mountains. I live in Colorado and drive up and down the Rockies.
Fuel economy is extremely poor. 20 mpg would be nice.
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