2010 Audi S5 on 2040-cars

Auto blog

2017 Audi S4 switches to turbo power, loses manual

If you dig the understated look of the 2017 Audi A4 but crave more power, then check out the latest S4. The new sport sedan sticks with a V6 but ditches the supercharger in favor of turbocharging to now produce estimated US figures of 354 horsepower and 369 pound-feet of torque. If there's one downside to the upgrade, it's that Audi only plans to offer the mill with an eight-speed Tiptronic automatic gearbox. The 2017 S4 is now quicker than before. The run to 62 miles per hour takes just 4.7 seconds, versus 4.9 seconds for the current sedan to reach 60 mph. The top speed remains at an electronically limited 155 mph, but fuel economy is claimed to be improved with a rating of 31.8 miles per gallon on the European testing cycle. All S4s come with Audi's venerable Quattro all-wheel drive, and it generally operates with a 40:60 front-rear power split. As conditions change, a maximum of 70 percent of the grunt can go to the front or 85 percent to the rear. Handling is also aided by a tweaked suspension that sits 0.9-inches lower than the A4. Beyond the different badges, the latest S4 doesn't visually advertise its prowess. LED lighting is standard, and quad exhausts rest in a new rear bumper with a subtle diffuser. The side mirror housings also get some aluminum-look trim. The interior layout echoes the A4 but with sport seats and a mix of Nappa leather and Alcantara upholstery. Audi's digital instrument cluster is optional and includes an exclusive sport screen among the three views. The new S4 goes on sale in 2016 as a 2017 model. In addition to the lack of a manual, there's no intention of offering the S4 Avant in the US. Sporty and high-tech: the new Audi S4 and S4 Avant September 15, 2015 | FRANKFURT/INGOLSTADT, Germany Audi launches the new S4 and S4 Avant at the IAA in Frankfurt am Main. The top models from the A4 series are ahead of the competition – with intelligent lightweight design, powerful engines, an extensive package of the latest technologies, and 260 kW (354 hp), 0 to 100 km/h (0 to 62 mph) in 4.7 seconds. (The all-new A4 and S4 are expected to go on sale in the U.S. market in 2016. The Avant is not planned for the U.S. market.) "At Audi, we have more than 20 years of expertise in developing our sporty S models," says Professor Dr. Ulrich Hackenberg, Member of the Audi Board of Management for Technical Development.

Audi is working on a suspension that gets power from bumpy roads

Regenerative brakes aren't new. They're on virtually every hybrid and EV, and they're even starting to pop up on traditional gas-powered cars, like with the i-ELOOP-equipped Mazda6. But even with these systems, cars can get more efficient, and Audi thinks it found yet another source of wasted energy. The source? The suspension. The idea is to turn the kinetic energy that goes into the dampers into usable energy instead of as waste heat. Audi isn't the first auto company to come up with regenerative suspension – nearly three years ago, ZF introduced its GenShock technology, which used a valve attached to traditional, oil-filled hydraulic shocks to recapture kinetic energy from movement caused by bumps in the road. Audi's prototype technology, which it calls eROT, replaces traditional dampers with horizontally oriented electromechanical rotary dampers. eROT is apparently short for electromechanical rotary damper. Neat. In testing, eROT recovered an average of 100 to 150 watts on a typical German road, three watts from a fresh piece of pavement, and 613 watts on a rough stretch of tarmac (wattage is calculated as power over time, so this is actually the rate at which the system harvests energy). The dampers channel that energy to a tiny, 0.5-kWh, 48-volt battery. The prototype is claimed to cut CO2 emissions by three grams per kilometer (4.8 grams per mile), while the company believes a future production version could save up to 0.7 liters of fuel per 100 kilometers of driving. Converting the savings to American miles per gallon isn't easy, so we'll use a practical example. In the US, the Q7's supercharged 3.0-liter V6 returns a combined rating of 21 miles per gallon, which works out to 11.2 liters per 100 kilometers. Apply eROT's 0.7L/100km savings, and the Q7's economy would improve to 10.5L/100km, or 22.4 mpg, a 1.4-mpg improvement. That's not huge, but because math, 0.7L/100km is more dramatic on a more fuel efficient vehicle – taking an A3's 27-mpg combined rating and adding eROT would drive efficiency up 2.4 mpg, for example. There are a few other big benefits beyond fuel and emissions savings – Audi claims eROT provides a more comfortable ride than traditional active suspensions, because engineers can tune the compression and rebound strokes independently of each other. Beyond that, the horizontally oriented rear suspension geometry means more cargo space, since the dampers don't poke up into the cabin like they normally do.

Infiniti Q50 Red Sport 400 priced at $48,855, AWD at $50,855

Infiniti's most powerful production model, the new Q50 Red Sport 400, now has a starting price. You'll need at least $48,855 for the rear-drive model or $50,855 for all-wheel drive. (Both figures include the $905 destination charge.) A fully loaded, rear-drive Q50 RS400 with Direct Adaptive Steering, navigation, adaptive cruise control, a heated steering wheel, and Infiniti's entire alphabet soup of safety equipment, tops out at $57,045. (Again, add $2,000 for AWD). When it comes to rear-drive competition, the closest base price to the Q50 is the 320-hp BMW 340i. This German undercuts the Infiniti by two grand, $46,795 to $48,855. But the BMW outprices the Q50 as soon as you start selecting options. A 340i with similar equipment to a loaded Q50 Red Sport 400 costs just under $60,000. All-wheel-drive German competitors also lose out in the price war. Like with the rear-drive models, the BMW 340i xDrive undercuts the Q50 RS400 by around $2,000. Add the options, and the Infiniti becomes a better value. The other two big German rivals, the Audi S4 and Mercedes-Benz C450 AMG start at a higher price and only get more expensive. Technically the S4 starts cheaper than the Q50, but only with the standard manual transmission. Selecting the S-Tronic dual-clutch model kicks the price from $50,125 to $51,125, and going for the top-end Prestige trim will bump potential Audi owners up to $57,025. Throw on must-have S4 options, including adaptive cruise control, adaptive dampers, and a sport differential and you'll be shell out $64,425 for the Audi. The Mercedes-Benz C450 AMG is the priciest choice in this group, starting at $51,725, or roughly $900 more than a base Q50 RS400 with AWD. Options, again, are the downfall here. Building a C450 to match a loaded Infiniti will drive the Mercedes' price up to $64,315. While it occupies something of a weird space relative to these vehicles, it's also worth mentioning the Cadillac CTS VSport. It's the only car in this impromptu pricing comparo that can outgun the Q50, with its 3.6-liter, twin-turbo V6 good for 420 hp and 430 lb-ft of torque. It also starts at $60,950, although that includes plenty of standard equipment. All this means that the Q50 Red Sport 400 represents a relative value. It packs more power than the Germans – 80 more than the 340i, 67 more than the S4, and 38 more than the C450 – and a more comprehensive list of options, too.