2008 Bmw X3 3.0si Awd Suv Very Low Miles Great Colors Immaculate 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 seeks partners for electric Mini, could make it an all-EV brand

LOS ANGELES — Germany's BMW is talking with other automakers "around the world" to try to find partners to lower the cost of electrifying its future Mini small cars, management board member Peter Schwarzenbauer told Reuters. "We are talking to many OEMs (manufacturers) around the world, not only in China, (about) how to electrify smaller cars," Schwarzenbauer said. "There's no final conclusion on it." Chinese automaker Great Wall Motor said last month it was discussing a possible venture to build Mini vehicles in China. BMW currently does not build Mini vehicles outside Europe. Schwarzenbauer declined to discuss the Great Wall situation, saying "this was speculation." However, he said building smaller electric cars was challenging, not only because of the financial costs, but also the engineering problem of fitting batteries with sufficient range into a smaller vehicle package. BMW has worked with rivals before to share the costs of clean vehicle technology. The automaker has a partnership with Toyota to develop fuel cell vehicles. BMW has said it plans to launch a new, electric Mini model in 2019. Eventually, Mini could become an entirely electric brand aimed at urban consumers, Schwarzenbauer said. Mini sales in the United States have fallen 10 percent through the first 10 months of this year, as demand for many smaller cars has waned in favor of sport-utility vehicles and trucks. "It's really only in the U.S. where we are facing this with Mini," Schwarzenbauer said. BMW will not try to reverse that trend by adding larger SUVs to the Mini lineup, Schwarzenbauer said. Instead, he said, "the way for Mini in the U.S. is ... building the Mini brand in the direction of the electric urban mobility company." On a separate issue, Schwarzenbauer said BMW intended to offer a self-driving car planned to debut in 2021 at a price that could be below $100,000. The iNEXT model, which BMW previewed earlier this year, will be offered to individuals, ride services fleets and put into service in BMW fleets, Schwarzenbauer said. "By 2021, you will have a lot of people who want to own this car," he said. "It will be a normal price. We are thinking of scaling this. To bring a $150,000 electric car is nice, but it will not really scale." When it launches, the iNEXT may not be offered with complete, so-called Level 5, autonomy because the regulatory and legal frameworks for such a vehicle likely won't be in place, Schwarzenbauer said.

Refreshed 2016 BMW 3 Series adds two new models to the range

The BMW 3 Series had years standing at the forefront of the luxury sedan segment, but competitors have continued to get better at challenging its long reign. To make sure the stalwart model can keep up, BMW is bringing some new powertrains and other upgrades to the range with a refresh for the 2016 model year. Plus, the exterior sees a very slight styling update. There are two big additions in the 3 Series range for 2016. First, there's the new 340i with the B58 turbocharged, inline-six engine to replace the 335i. Displacement is still 3.0-liters, but the latest mill makes 320 horsepower and 330 pound-feet of torque – gains of 20 hp and 30 lb-ft over the outgoing model. BMW estimates the 340i can reach 60 in 4.8 seconds with the standard eight-speed automatic or in 4.6 seconds with xDrive. A six-speed manual is also available as a no-cost option. The other new member of the family is the 330e plug-in hybrid, and it joins the lineup later in the year. BMW isn't specifically talking about the PHEV's powertrain, but the company estimates total output of 250 hp and 310 lb-ft. The sprint to 60 is forecasted at 6.1 seconds, and the range on electric power is predicted at 22 miles. Fuel economy isn't disclosed yet. Beyond these two models, there are a host of other upgrades under the skin for the 3 Series. The eight-speed automatic should be slightly more efficient thanks to wider gear ratio, and the handling is reworked with new front struts, rear dampers, and retuned electric power steering. There's also a Track Handling Package for gas-fueled models that combines Variable Sport Steering, Adaptive M Suspension and M Sport Brakes with high-temperature pads. The nav system accepts over-the-air map updates now, as well. You certainly can't see all of the changes on the outside, though. For the 2016 3 Series, BMW's designers tweak the front fascia slightly and update the headlights. LED units are optional on the 320i, 328i, and 328d, and they're standard on the 340i. The rear features reshaped LED taillights, and inside there's additional ambient lighting and chrome trim. In one other small adjustment, the look of the Sport Line package with black trim on the grille, B-pillars and rear bumper is now included on the 328i, 328d and 340i. Related Video: The New BMW 3 Series Sedan and Sports Wagon: Lifecycle freshening for all 3 Series Sedans and Sports Wagons. New 340i Sedan features new 320 hp TwinPower Turbo Inline 6-cylinder.