1991 Bmw M5 Base Sedan 4-door 3.6l on 2040-cars

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AC Schnitzer ACS4 Sport packs 510 hp under a subdued carbon fiber bodykit

One of the interesting things about the Geneva Motor Show is the breadth of the European auto industry that it covers. Beyond just the stands from major manufacturers and boutique marques, the event also hosts the regions top tuners. Among them this year are the BMW specialists AC Schnitzer, with myriad upgrades for the M4. By the time the company is done, the coupe gets renamed the ACS4 Sport. The M4 is already a potent machine with its 431-horsepower, turbocharged inline-six, but for customers willing to spend the money, more performance is always possible. AC Schnitzer's engine upgrade takes power up to 510 hp and 476 pound-feet of torque, and buyers can also add a new exhaust with carbon-fiber-surrounded tail pipes barely protruding from the rear. The company offers two suspension kits, as well. The first lowers the BMW by 1.0-1.2 inches in front and 0.4-0.6 inches in the rear. However, for drivers who really want to scrape the ground, an adjustable racing option drops the front by 1.2-1.6 inches and the back by 1.2 inches. Of course, AC Schnitzer's buyers also want to show off their cars' added performance, and the company is ready with a host of carbon fiber pieces. Up front, there's a new front spoiler, splitter and side flicks, and the rear is available with a diffuser, roof spoiler and fixed rear wing. A wide variety of wheels finish off the sporty look, including the brand's AC1 BiColor twin-spoke design offered in forged or standard versions. Get a full look at the German tuners fairly tasteful upgrades in our gallery from the show floor, above. ?"Man, Machine & More" – The M4 by AC Schnitzer Aachen-based tuning experts open new dimensions in the field of Motorsport power Man, machine & more - The tuning experts at AC Schnitzer have given the BMW M4 with Motorsport power a further kick of energy. Once again, the Aachen-based tuning specialists have shown that there's no upper limit to power and sporting performance. To build up the muscle power of the BMW M4, AC Schnitzer has provided a performance upgrade containing of an additional control unit which increases the performance from 431 to 510 hp, and from 550 to 645 Nm. Scope of delivery of every AC Schnitzer performance upgrade includes always a two years guarantee which can be upgraded up to three years. After a visit to the Aachen workshops, the powerful energy combustion developed with the AC Schnitzer "Efficient Performance" know-how is also revealed in the exhaust of the M4.

TRANSLOGIC 147: CES 2014 Autonomous Vehicles

We head back to CES in Las Vegas to check on the progress of autonomous vehicles in 2014. We go hands-free on the highway with Audi, narrowly avoid a collision with Ford and hear all about BMW's drifting driverless car. But first we take a ride on Induct's self-driving Navia shuttle.

Alpina B3 Bi-Turbo burns all the midnight oil

We've got good news and bad news for you, boys and girls, from the floor of the Frankfurt Motor Show. The good news is that the BMW M3 has come early, with a diesel, in wagon form - albeit with a different name. The bad news is that it will in all likelihood never make it to America. Which is a shame, because it's awesome.
What we're talking about, of course, is the new Alpina D3 Bi-Turbo. BMW's wickedly talented but lesser know stepchild has created a 3 Series with a 3.0-liter twin-turbo diesel six packing 345 horsepower and 516 pound-feet of torque. You - and by "you," we mean overseas buyers - can choose between sedan or wagon, as well as rear- or all-wheel drive. But the bottom line is a 4.6-second 0-62 time and a 173-mph top speed... from a diesel.
We scoped out the rear-drive wagon Alpina brought to the show, decked out in its signature blue. And you can, too, in the gallery of live shots above, along with the freshly assembled stock photos of both sedan and wagon versions in the gallery below.