Most Read Car Reviews of the Week: November 30 – December 7

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This week on AutoGuide.com, a comparison between two high-horsepower sedans nabbed the most attention.

We took the 2015 Audi RS 7 and the 2015 Jaguar XFR-S to the race track to see which would be faster. It turns out, one car is considerably faster, while the other one might be a bit more fun to drive. Check out the comparison to find out which is which.

Next up is our 2015 Truck of the Year Shootout. We gathered together four new or significantly upgraded trucks, the GMC Canyon, Ford F-150, Ram Power Wagon and GMC Sierra Denali HD, to determine which one made the biggest leap within its own segment this year. Check out the shootout to see plenty of mud, and lots of trucks.

Toyota's first hydrogen-powered car makes the third spot on the list. The Mirai gets about 300 miles on a single tank and can fill back up in about 5 minutes. Is this is alternative fuel of the future? Check out our thoughts in the review.

Chevy's latest compact crossover is coming to the States, and we just had a chance to drive it. The new 2015 Trax has already been selling in Canada for about two years, and now Chevy has decided to spread the small vehicle across North America.

Finally, our review of the Alfa Romeo 4C closes out the week. Comfort is not the Alfa's strong suit, but as a sports car, it is quite wonderful. Read about its strengths and weaknesses in our review.

So whether you're shopping for a new car or just want a good read, we've got you covered. Hit the hotlinks below to read our most popular reviews.

2015 Audi RS 7 vs. Jasguar XFR-S – Video

2015 AutoGuide.com Truck of the Year – Video

2015 Toyota Mirai Review – Video

2015 Chevy Trax Review

2015 Alfa Romeo 4C Review – Video

2015 Acura TLX Under Stop Sale Over Transmission Issue

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The 2015 Acura TLX is already running into some issues with its nine-speed transmission.

The Japanese automaker has told its dealers to stop selling the 2015 TLX sedan and has informed the National Highway Traffic Safety Administration (NHTSA) of a recall notice that will affect approximately 9,500 units of the TLX equipped with a V6 engine. The issue involves the transmission indicator displaying "Park" without the transmission actually engaging park. According to Acura, during manufacturing of the nine-speed transmission, there was a possibility that contamination could cause the parking pawl not to engage or the park rod could have been damaged during assembly. As a result, the park rod could dislodge, preventing the transmission from shifting into the Park position.

SEE ALSO: 2015 Acura TLX Review

Increasing the risk of a crash, the TLX's shift indicator will display "Park" even though the Park Lock is not engaged, which will allow the vehicle to roll away. NHTSA has not yet confirmed the recall but Acura's notice to the agency is the first step in the formal recall process.