The GLS-Class officially makes its debut for 2017, though it's really a slightly revised version of the outgoing GL-Class. Highlights include modified exterior styling, a newly standard nine-speed automatic transmission (except on the AMG GLS 63) and a touchpad-operated infotainment system with a larger screen and available Apple CarPlay. Also, all engines except the GLS450's turbocharged V6 get a bit more horsepower this year.
Pros Third row is large enough for adults Spirited acceleration with any of the three gasoline engines Impressive fuel economy with the diesel engine Quiet cabin with high-end trimmings and features.
Cons Diesel-powered model feels relatively slow when passing and merging Big price jump from the six-cylinder models to the V8-powered versions.
The 2017 Mercedes-Benz GLS gets the first-class upgrade along with its name change—and a Maybach edition is waiting in the wings. The 2017 Mercedes-Benz GLS-Class marks a significant, mid-cycle upgrade for what was previously knew as the GL-Class. As part of a nomenclature change sweeping the entire brand, each of the German luxury maker's sport-utility vehicles has received new badging and a full or partial makeover to bring the lineup into more obvious parallels with its sedans—so this large, three-row SUV becomes the GLS, to align it with the largest S-Class sedan. Hence the S in its new name.
Pros Spacious, flexible interior Rugged-lux, with some added panache Great set of safety, infotainment features
Cons Not an entirely new vehicle Some switchgear looks dated Cumbersome COMAND interface
The 2017 Mercedes-Benz GLS-Class ranks 1 out of 8 Luxury Large SUVs. The 2017 Mercedes-Benz GLS hits most of the right notes for a large SUV. It boasts a supple ride, three powerful engine choices, three rows of roomy seats, and the same level of luxury that has come to be synonymous with the brand. However, the GLS has fewer standard features than many rivals do, and its available V8 engines are less fuel-efficient than those offered by many competitors.
Pros Powerful engine lineup Smooth ride Three rows of spacious seats
Cons Fewer features than some rivals V8 engines get subpar fuel economy
The 2017 Porsche Cayenne is versatile and roomy, yet it possesses road and even track performance to satisfy enthusiasts. The 2017 Cayenne brings the attitude, and many of the visual cues, of Porsche's sports cars to a very family-friendly, sport-utility format. The lineup is varied, with the naturally aspirated base model, the turbocharged S, the S E-Hybrid plug-in, the amped up GTS, the incredibly powerful Turbo, and the even loonier Turbo S.
Pros Strong acceleration (all except base) Capable handling Lots of room for individualization A potent, fun-to-drive hybrid
Cons No third-row seating Interior isn't so space-efficient Underwhelming base model
The 2017 Porsche Cayenne ranks 3 out of 22 Luxury Midsize SUVs. The Porsche Cayenne is one of the highest-rated SUVs in its class, thanks to its deft handling ability and potent available engines. The well-appointed cabin is one of the most comfortable in the class. However, the Cayenne has a high starting price that climbs much higher with the upper trims.
Pros Strong acceleration with optional engines Superior handling ability Comfortable seats Stylish, well-made interior
Cons Hefty price tag Below-average cargo capacity
The 2017 Cayenne gets Porsche's latest (PCM 4.0) touchscreen infotainment system on every trim level, improving functionality. Limited Edition Cayenne and Cayenne S E-Hybrid Platinum models also join the range, bringing the trim level count up to eight. The Cayenne Diesel has been discontinued due to the Volkswagen diesel emissions scandal.
Pros Truly impressive handling for a crossover SUV Wide selection of strong engines available Exquisite interior and build quality Plenty of customization options
Cons Relatively small cargo capacity for the segment Quite a few optional features should be standard given the price tag
