2014 Porsche Cayenne Turbo Awd on 2040-cars

Auto blog

Is the skill of rev matching being lost to computers?

If the ability to drive a vehicle equipped with a manual gearbox is becoming a lost art, then the skill of being able to match revs on downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. The usefulness of rev matching in street driving is limited most of the time – aside from sounding cool and impressing your friends. But out on a race track or the occasional fast, windy road, its benefits are abundantly clear. While in motion, the engine speed and wheel speed of a vehicle with a manual transmission are kept in sync when the clutch is engaged (i.e. when the clutch pedal is not being pressed down). However, when changing gear, that mechanical link is severed briefly, and the synchronization between the motor and wheels is broken. When upshifting during acceleration, this isn't much of an issue, as there's typically not a huge disparity between engine speed and wheel speed as a car accelerates. Rev-matching downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. But when slowing down and downshifting – as you might do when approaching a corner at a high rate of speed – that gap of time caused by the disengagement of the clutch from the engine causes the revs to drop. Without bringing up the revs somehow to help the engine speed match the wheel speed in the gear you're about to use, you'll typically get a sudden jolt when re-engaging the clutch as physics brings everything back into sync. That jolt can be a big problem when you're moving along swiftly, causing instability or even a loss of traction, particularly in rear-wheel-drive cars. So the point of rev matching is to blip the throttle simultaneously as you downshift gears in order to bring the engine speed to a closer match with the wheel speed before you re-engage the clutch in that lower gear, in turn providing a much smoother downshift. When braking is thrown in, you get heel-toe downshifting, which involves some dexterity to use all three pedals at the same time with just two feet – clutch in, slow the car while revving, clutch out. However, even if you're aware of heel-toe technique and the basic elements of how to perform a rev match, perfecting it to the point of making it useful can be difficult.

Best plug-in hybrid cars, SUVs and minivans for 2024

We’re fans of electric vehicles, but they have their shortcomings. TheyÂ’re not available in as wide of a range of body styles as gas-powered cars, and theyÂ’re still limited by range and charging infrastructure. Plug-in hybrids (PHEVs) offer a great compromise, though, allowing for all-electric driving, but also having a gas engine for when you need more power or to travel long distances. Choosing a plug-in hybrid vehicle also allows more options; for instance, you canÂ’t get an all-electric minivan in the U.S. Â… yet. But with those extra PHEV offerings, it might be difficult to know where to start shopping. WeÂ’ve narrowed it down a bit, bringing you the best plug-in hybrids for 2024, as voted on by Autoblog staff, in various segments to help you pick a great PHEV based on your budget and needs. Best luxury plug-in hybrid large/midsize SUV: Volvo XC90 Recharge Despite showing its age, the Volvo XC90 remains an excellent three-row crossover in terms of design, comfort and safety, and the XC90 Recharge plug-in hybrid only improves the formula with both power and efficiency. Interestingly, with the gas motor powering the front axle and the e-motor powering the rear, the XC90 Recharge operates as a rear-wheel-drive car when only using electric power, and front-wheel-drive when only using gas. The powertrain is good for 455 horsepower and 523 pound-feet of torque, with a 5-second 0-60 time. It can travel 32 miles on electricity alone. Runner-up: Porsche Cayenne E-Hybrid   Best mainstream plug-in hybrid large/midsize SUV: Jeep Grand Cherokee 4xe Do you want an American PHEV with style, refinement and off-road capability? The Jeep Grand Cherokee 4xe combines all that with a turbocharged 2.0-liter and electric motor good for 375 horsepower and 470 pound-feet of torque, as well as an electric range of 26 miles. That means you can enjoy your favorite trails in near silence and make fewer trips to the gas pump on the way there. Runner-up: Kia Sorento Plug In-Hybrid   Best luxury plug-in hybrid compact/subcompact SUV: Volvo XC60 Recharge Volvo borrows the formula from the XC90 and places it in a smaller package to get the XC60 Recharge. It has the same 455 horsepower and 523 pound-feet of torque, but it drops the 0-60 time to 4.5 seconds while offering 35 miles of electric range. You can even pony up for the Polestar Engineered trim to get the Ohlins suspension, Brembo brakes, 21-inch forged wheels and unique styling.

Porsche releases new images of LMP1 racecar

Porsche has released another batch of images of its LMP1 competitor preparing for its debut season in 2014. This isn't the first we've seen of the new car, as June saw four images of the new racer undergoing testing. Where those images looked merely like someone taking pics during the test, the 11 new images seen above have all the hallmarks of highly polished PR shots.
That aside, the camo-covered cars still provide another look at what the new LMP1 car will look like when it arrives next season. The taillights follow the example set by Audi, by vertically mounting ultra-thin LEDs on the tips of the rear wing, while the LED headlights sport the four-prong look that Porsche has been pushing of late. Besides those two items, its difficult to make out many details due to the amount of camo.
Porsche's LMP1 effort will be focused on the FIA World Endurance Championship, which will see the revered brand return to the top flights of the 24 Hours Of Le Mans with F1 ace Mark Webber behind the wheel. As we've mentioned before, the German brand has set up a dedicated microsite that will cover its newest racer's progress.