Introduced at the 2006 Los Angeles Auto Show, the 2007 Pontiac Solstice GXP has the most powerful production engine in the Ecotec family, a 2.0-liter powerplant that delivers 260 horsepower and 260 lb. ft. of torque. That propels the Solstice to a 0-60 mph time of under 5.5 seconds, and will make even the proudest of MX-5 owners feel a bit slow and chumpish one lane over, and maybe a little envious. What they won’t be going green over, however, is the amount of green GXP buyers are likely to lose on the deal, compared to the modestly priced and under-the-radar MX-5. It’s not so much a matter of equipment as it is supply and demand: As the demand for the Solstice rages and the supply trickles, the GXP will command more money, even with a sticker price that’s expected to reach up to around $26,000. For that, you’ll get more than just the power boost. Also standard are features such as GXP front and rear fascias, dual-outlet exhaust, StabiliTrak vehicle stability enhancement system, a sport suspension system, four-wheel disc brakes with ABS, limited-slip rear differential, power window/locks/mirrors, remote keyless entry and18-inch polished aluminum wheels. Many of these features, such as the sport suspension system, four-wheel disc brakes and power controls, are also available on the regular Solstice. Additional options on the 2007 Pontiac Solstice GXP include a rear deck spoiler, leather seating, sport metallic pedals, chrome wheels, enhanced audio options, including XM Satellite Radio, and OnStar.

Miata, er, MX-5 owners won’t lose sleep over a Solstice interior that, while improved to include a GXP instrument gauge, leather wheel trim and red seat stitching, fails when it comes to quality fit and finish.