Bmw M3 2002 Convertible E46, Must See! on 2040-cars

Auto blog

VW Golf R, Ram Power Wagon and Subaru Forester | Autoblog Podcast #591

In this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Consumer Editor Jeremy Korzeniewski and Road Test Editor Reese Counts. After some talk about sponges and other randomly received oddities, this episode is all about the cars we've been driving, including the new Subaru Forester, VW Golf R (which is going on hiatus), BMW M340i xDrive and Ram Power Wagon. Then, they take to the mailbag to help a listener pick a sporty new car in the "Spend My Money" segment. Autoblog Podcast #591 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown Sponges, really? 2019 Subaru Forester Sport 2019 Volkswagen Golf R 2020 BMW M340i xDrive 2019 Ram 2500 Power Wagon Spend My Money Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video:  

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.

BMW Concept X5 eDrive plug-in hybrid headed to Frankfurt

With six confirmed public debuts scheduled for the upcoming Frankfurt Motor Show, BMW is definitely going to have its hands full. While we've already driven models like the 4 Series and the i3, one of the more interesting introductions is a "concept" plug-in hybrid version of the new F15 BMW X5 called the BMW Concept X5 eDrive.
As the second concept to wear the eDrive name, this X5 combines a 95-horsepower electric motor with a turbocharged four-cylinder engine to balance performance and efficiency. On the green side of things, BMW says that the eDrive system allows the X5 to reach speeds of 75 miles per hour and a range of 19 miles (although we're guessing not at the same time) under electric power only, to go with fuel consumption of about 62 miles per gallon US (3.8 liters per 100 kilometers). For performance, this plug-in can still accelerate from 0-60 in under seven seconds, and drivers can select from three PHEV modes: one that operates the system automatically, an all-electric mode and a Save Battery mode to preserve the battery's current state of charge.
Aside from the obvious plug port on the left front fender, the X5 eDrive is differentiated from the 2014 X5 with slightly restyled front and rear fascias, subtle blue accents tying in with the BMW i line and lightweight, aero-tuned 21-inch alloy wheels. There is no definitive word on whether the Concept X5 eDrive will make it to production, but judging by BMW's recent commitment to plug-in vehicles, we wouldn't be surprised to see an X5 PHEV on the roads within the next couple of years. We'll see the Concept X5 in just a few weeks in Frankfurt, but until then, scroll down for the official press release.