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Mercedes-AMG could use electric turbos

Mercedes-Benz is joining Audi in analyzing electric turbochargers for its production cars. But while Ingolstadt will roll out its first e-turbo in its A8 luxury sedan, Stuttgart is studying the technology for use in small performance cars, like the A45, CLA45, and GLA45 AMG models. Auto Express spoke to Mercedes-AMG compact car boss Steffen Jastrow about the cutting-edge tech, which reduces turbo lag, improves fuel economy, and occupies less space under the hood than a standard turbo. "Of course we need more power for the next-generation of cars, but electrification does not mean we have to use an electric drivetrain." Jastrow said. "They have to be faster and e-turbos are an option. We use them in motorsport, but the technology has to be payable for the customer." As AE tells it, bringing the price of e-turbos down from the A8's luxury car level to the relatively affordable sums demanded by compact AMG models will still take some time. So don't count on seeing a Mercedes with an electric turbocharger until the new A-Class arrives in 2017, at the earliest. Related Video:

Daimler: 2017 the right time to launch our hydrogen fuel-cell vehicle

Zero-emissions vehicle development has never focused purely on off-the-line acceleration. So when a research executive with Mercedes-Benz parent Daimler says it's Okay that companies like Toyota and Hyundai will have a head start selling hydrogen fuel-cell vehicle, it's somewhat believable. But is Daimler really fine with being two years behind? It appears so. Daimler plans on debuting its first fuel-cell vehicle in 2017, Automotive News says, citing an interview Automobilwoche had with Daimler's corporate research chief Herbert Kohler. The German automaker estimated about a decade ago that it would be able to get fuel-cell production costs down to an "acceptable" level in 2012, but it turns out that estimate was about five years too aggressive. Daimler originally started leasing out a limited number of its F-Cell hydrogen vehicles in the US for $849 a month, though later brought that down to $599 a month. Daimler says it received a boost in its effort to accelerate fuel-cell powertrain development when it reached an agreement early last year with Nissan and Ford to work together on speeding up relevant powertrain technology. While Toyota's first fuel-cell vehicle in Japan is priced at almost $70,000 (before big government incentives kick in), Kohler says Daimler's first fuel-cell vehicle will be priced similar to a hybrid vehicle. Of course, that's a Mercedes-Benz hybrid we're talking about here, but still. Related Gallery Mercedes-Benz F-Cell View 9 Photos News Source: Automotive News - sub. req. Green Mercedes-Benz Hydrogen Cars h2

2019 BMW M850i xDrive: How it compares on paper with other GT coupes

Although the hot new vehicles for the rich seem to mainly comprise SUVs and supercars, the neglected luxury GT coupe segment is starting to see some life again. The latest to add a spark to this set is the 2019 BMW M850i xDrive. It goes on sale later this year, and revives the 8 Series that's been dead since the 1990s. The first version available to Americans will be one with a twin-turbo 4.4-liter V8, with other versions likely following. Before it launches, we wanted to get a lay of the grand-touring land and see how the new BMW stacks up to the competition in performance, practicality and price. While some of these models have higher-performance or more-affordable iterations, we picked the versions that would be the closest match to this 8 Series model. They include the 2019 Lexus LC 500, 2018 Mercedes-Benz SL 550, 2018 Mercedes-Benz S 560 Coupe and the 2018 Maserati GranTurismo. We will also provide some short summaries on our experiences with these cars, but to get a full picture of each model, be sure to check out their full reviews. And if you want to compare any of these cars with models you don't see here, be sure to try out our car comparison tool. Engines, transmissions and performance On paper, the BMW M850i xDrive is clearly the performer of the group. It has the most power and torque at 523 horsepower and 553 pound-feet. Coupled with all-wheel-drive and an eight-speed automatic, the car is able to overcome its relatively portly 4,478-pound curb weight to hit 60 mph in a scant 3.6 seconds. That's more than half a second quicker than the lightest car in the group, the Mercedes-Benz SL550, which weighs 4,012 pounds. The other three vehicles are in the low- to mid-4-second range to 60 mph. Though the Maserati is the slowest to 60 mph, it does boast the highest top speed of 186 mph. The M850i and SL 550 are electronically limited to 155 mph, while the Lexus is limited to 168 mph. The Mercedes S 560 has the lowest top speed at an electronically limited 130 mph. View 52 Photos Of interest is that there's a 50/50 split among these cars between using a pair of turbos, and having none at all. The BMW and Mercedes resort to forced induction, whereas the Lexus and Maserati choose to stay naturally aspirated. This is likely why the Germans break 500 pound-feet of torque, while the others don't make it to 400. Also interesting is the spread of gear quantity. The Maserati has just six ratios to choose from, and the Lexus has a whopping 10.