Only 50k Miles !! 6-speed, Competition Pkg, Borla Exhaust 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.

BMW's next-century concept mentions no powertrain, and we're sad

So the Ultimate Driving Machine might soon become the Ultimate Machine Driver. We get it, that's the way things are moving. For its part, BMW still plans to involve a driver in its next-century designs, as foretold by the Vision Next 100 concept it unveiled at its centenary celebration kickoff event. But what gets us is that BMW, Bayerische Motoren Werke, the company known for delivering some of the most sorted powertrains – gasoline and otherwise – over the last century makes no mention of the future of propulsion when presenting its idea of the next 100 years on the road. Maybe it's the fact we just don't know what will power our cars even 10 years down the line; locking into one concept or another could look bad in hindsight. But the whole, er, concept of a concept is to look at what might be possible, not avoid sticky issues. Where are the in-hub motors, the wireless charging mats, the onboard fusion reactors we were promised in Back to the Future Part II? This is an opportunity to offer innovative solutions. Skipping over the power was a mistake, and one that makes me a little disappointed in the company. I'd have liked to see BMW go big with a bold prediction, or even just admit that gas will be gone and some form of electrification will take its place by 2116. We're okay with electric motors as long as they don't drain the life out of cars, and they don't have to, which is something companies like Tesla and even BMW have proven. Here's hoping one of BMW's other centenary concepts will pick up where the Vision Next 100 fell short. Related Video: Featured Gallery BMW Vision Next 100 Concept Green BMW bmw vision next 100 concept

BMW i8 pitted against M4 in sibling rivalry track battle

We recently watched Auto Bild challenge the BMW i8 against the M4 in a German drag race of decide the quicker of the inter-brand rivals. The hybrid took a commanding victory in that fight. However, Autocar now has a new battle for the two coupes. The siblings are together again on the Castle Combe Circuit to find out which of them offers the more enjoyable experience at the track. Unfortunately, we don't ever get a perfect point of comparison in the video because host Steve Sutcliffe never does a full lap in anger with either of them to set a time. Instead, he focuses more on how the BMWs feel behind the wheel. Sutcliffe also admits midway through the clip that the i8's electric motor is out of juice to power the front axle's electric motor. That only leaves the hybrid with its 228-horsepower and 236-pound-feet-of-torque turbocharged three-cylinder to spin the rear wheels. Still, Sutcliffe spends ample time explaining the benefits and downfalls of driving these coupes. See where his opinion falls between the M4 as the traditional German sports coupe and the i8 as the new-school hybrid in the video, above.