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diesel cars

diesel cars

  The diesel engine is a type of internal combustion engine; more specifically, it is a compression ignition engine, in which the fuel is ignited by being suddenly exposed to the high temperature and pressure of a compressed gas, rather than by a separate source of ignition, such as a spark plug, as is the case in of the gasoline engine.

Citroen has made its reputation building innovative and forward-thinking cars. Since the post WWII days with the Citroen DS , the French automaker has always thought outside the box, and this C4 Cactus is no exception.

The two defining outward features are unmistakably its unique yet familiar shape and the colored, bumpy panels affixed to its sides. While they are major components in making the C4 Cactus what it is, they aren’t its only innovative or interesting qualities. Other endearing qualities can be found within as well.

The C4 Cactus’ interior looks like a cross between an IKEA and a classy men’s wardrobe boutique, with Android software running the infotainment system and gauge cluster. Materials and their overall design are high quality with a certain vogue, yet timeless attribute.

While certain things inside and out might seem expensive, Citroen’s goal was to significantly reduce the cost of ownership – and they’ve done it by a good 20 percent. Fuel savings goes a long way in saving owners money, namely its 91 mpg rating in diesel form measured on the European cycle. Weight savings also plays a huge role here. Weighing in at a mere 2,127 pounds, the Cactus is said to be much easier on its running gear, lessening the need to replace parts as often.

Citroen seems most proud of saving customers money in the area of body damage. The Cactus’ Airbump system reduces the chance of parking lot dings and minor finder bender damage with its thermoplastic polyurethane construction and air-filled pockets. Even with their purposeful nature, the Airbump panels sure make a bold statement while living up to its Cactus name.

Click past the jump to read more about the 2014 Citroen C4 Cactus.

Toyota Tundra

Note: Current generation pictured here.

It appears Toyota will be the next automaker to adopt diesel technology into its full-size truck segment. According to WardsAuto, the Tundra will be getting a V-8 diesel powerplant when its next generation debuts in 2016. What’s more, word has it Tundra’s new oil-burner will be supplied by famed diesel builder, Cummins. And not just any Cummins at that…

It will be a version of the same 5.0-liter V-8 turbodiesel that rival truck-builder Nissan has slotted to power its next-generation Titan set to debut next year. Not only is this huge news for Tundra fans, it represents uncharted territory in diesel engine sharing on the light-duty level. Truck buyers are a fiercely loyal bunch, so it will be interesting to see where exactly loyalties fall — with the truck- or engine-builder.

There’s no official word on how the Tundra’s diesel will compare to the Titan’s, which is said to be rated at “more than” 300 horsepower and 500 pound-feet of torque. The only sure thing is the certainty of some very intense engineering meetings between the three companies.

The overriding reason diesels are catching headlines these days is the need for automakers to meet the impending CAFÉ standards that are tightening up on corporate average mpg ratings. The target: a company average of 54.5 mpg by 2025. Nissan and Toyota aren’t the first to go diesel. Ram , in fact, already has their 3.0-liter V-6 EcoDiesel currently on sale in the U.S. Rated at 240 horsepower and 420 pound-feet of torque, the EcoDiesel Ram 1500 achieves a class-leading 20 mpg city/28 mpg highway.

Click past the jump to read more about the 2016 Toyota Tundra.

Source: WardsAuto

We never bother covering 10-minute Nϋrburgring times. In fact, anything over eight minutes is not really worth our time. And we have never, nor did we ever plan to cover a Citroen AX Diesel . I mean, with just 52 horsepower, it is pretty obvious why we just have no interest in it. That said, when you combine these two typically boring topics, we suddenly become really interested.

It takes a pretty good driver to lap the `Ring in under 10 minutes in any normal car, but to do so in this 52-horsepower, bone-stock hatchback not only takes skills, but it also takes a set of gonads large enough to need their own area code. Well, this fine gentleman must have put his set in the trunk, as they were nowhere in sight, but he managed to clear the bridge-to-gantry run in 9:55.

Watching him work that underpowered diesel engine like a champ was a thing of beauty. As he stated, the AX’s 1,360 cc diesel engine is a dog once the 720 kg (1,590-pound) car loses its momentum, so he had to push this puny hatchback with what appeared to be nothing more than bicycle tires under it further than some of us may be comfortable in a modern supercar .

Don’t think that he simply hopped in his AX and headed to the `Ring for a quick session when he broke the 10-minute barrier. He did 118 laps around the Nϋrburgring to get to know the course, then it took him 10 full-throttle attempts to get it under 10 minutes. That is some serious perseverance, folks.

Out hats off to you. Regardless of how much you downplayed in on the YouTube post, that was some amazing driving and awesome reflexes.

Thanks to a few new players in the market, the midsized truck battle looks be reviving. News about GM’s new mid-size trucks getting diesels have also stirred up a frenzy, starting with Nissan .

What you see here is the Frontier Diesel Runner, a “concept” truck built to gauge consumer interest in diesel-powered, midsized trucks. The truck itself is barely changed from the production line, but features a 2.8-liter, I-4 turbodiesel built by renowned engine builder Cummins. The Cummins/Nissan partnership isn’t new, however, as the pair have plans to power the next-generation Nissan Titan with a 5.0-liter V-8 turbodiesel in 2015.

The Frontier ’s diesel engine is expected to produce around 200 horsepower and more than 350 pound-feet of torque — all while increasing fuel efficiency by 35 percent over the standard 4.0-liter, gasoline V-6 engine. It’s backed by a ZF-sourced 8HP70 eight-speed automatic transmission. The new engine-transmission combo is expected to tow and haul roughly the same as the conventional gasoline Frontier.

Nissan and Cummins did have to modify the truck slightly to get the powertrain nestled within the engine bay and transmission tunnel. Saving room and further development, this frontier lacks the optional four-wheel-drive and added complexities the system brings to a driveline.

It’s very unlikely the Frontier will be sold with a diesel option in its current generation. Nissan is hard at work developing the second-generation Titan pickup, and will likely turn its attention it the Frontier once development is competed there. We expect a new Frontier won’t be far behind the new 2015 Titan. If Nissan chooses to include a diesel as a powertrain option, it’s likely to happen then.

Click past the jump to read more about the 2015 Nissan Frontier Diesel Runner Powered by Cummins.

Diesels seem to be breaking their oil-burning, noisy, smokey stigmas that have haunted them for decades as more and more automakers are now offering clean diesels in their lineups. The latest huge influx of diesel models hails from Audi .

The German automaker, which is owned by Volkswagen Group, has announced a huge diesel push with 11 new TDI “Ultra” models, including the new A6 TDI Ultra detailed here. For starters, the "Ultra" in the TDI Ultra name is Audi’s designation for sustainable mobility that is fully available for everyday use — a long explanation for a TDI A6 that gets darn good fuel mileage while not hindering its common usability.

The heart of the matter is a 2.0-liter, four cylinder diesel that produces 190 horsepower and 295 pound-feet of torque that pushes the A6 from 0 to 60 mph in 8.2 seconds while achieving 53 mpg highway. With stats like that, we don’t mind hugging trees and filing up next to big rigs. Keeping all those trees happy, however, is Audi’s high efficiency SCR system that removes nitrogen oxides from the exhaust. The new system also lets the A6 pass the stringent Euro 6 emission standards with ease.

Backing the 2.0-liter TDI are two optional transmissions: a six-speed manual transmission is standard, followed by the optional seven-speed dual-clutch S tronic automatic. However, opting for the slap-paddle gearbox shoots the A6’s price up €2,250 — roughly $3,000 at the current exchange rates — making rowing your own gears sound evermore attractive.

Furthering the A6 ’s efficiency is the standard start-stop system and driver information center that helps keep track of good driving behavior.

Pricing for the A6 Avant TDI Ultra starts at €42,250 (about$57,000 at today’s exchange rates) and the A6 sedan TDI Ultra starts a little lower at €39,900 (around $54,000). Sales will begin sometime in the first quarter of 2014 and there are no plans yet to release any Ultra models in the U.S.

Click past the jump to read more about the standard Audi A6.

Posted on by Christian Moe +  

As the cheapest coupe Audi sells, the A5 is designed to bring a seductive two-door into an affordable price bracket. Now Audi looks to add even more value to that bargain basement price with its new “ultra” line of TDI equipped cars.

The Volkswagen family of turbocharged diesel engines are already some of the best when it comes to balancing fuel economy and performance, so it makes sense to see that expertise leveraged. The new ultra models are equipped with a new 2.0-liter TDI engine that is available in three levels of power output: 136 horsepower, 163 horsepower and 190 horsepower. If those numbers seem low, don’t worry. These engines pack tons of torque, so at lower speeds they still have plenty of thrust.

The A5 Ultra comes powered exclusively by the 163-horsepower version of this new engine. This engine configuration lays out an absurd 295 pound-feet of twist, and it is sold with a special six-speed manual transmission with taller final gears for improved economy. Audi is claiming a fuel economy rating 56 mpg combined on the EU scale, and top speed sits at 140 mph.

As you can probably guess from the manual-only designation, this car is not currently slated for a U.S. release. We reached out to Audi on the possibility of bringing the “ultra” models to U.S. shores, and John Shilling, Manager of Product Communications at Audi, said there are "No plans in the U.S. for that version at this time."

Click past the jump to read about the standard Audi A5.

Posted on by Christian Moe +  

The sales market of executive limousines has been slowly increasing over the last several years. These extra-long sedans provide unsurpassed comfort, technology and refinement. Formerly the sole domain of rear-wheel drive German sedans with huge cylinder counts, the market has seen quite a shakeup over the last few years. Hyundai is trying to steal sales with the Equus , and companies like Audi have released more fuel efficient, diesel-powered versions of its A8L , and nearly every competitor now offers an AWD variant.

BMW is looking to take eyes away from the competition with its own fuel-efficient, all-weather model. The newly announced 740Ld xDrive combines a fuel-sipping diesel engine with the xDrive AWD system and crams it all under the sheetmetal of BMW’s biggest car.

Is this the winning combination that BMW needs to keep from hemorrhaging buyers to competitors like Hyundai, Jaguar and Audi? We have all the details below to help you decide for yourself.

Posted on by Christian Moe +  

Diesel-powered cars are gaining ground in the United States lately with both Volkswagen and Audi introducing new models into the market. Mazda is looking to join the fray of consumer diesel model with its Mazda6 sedan.

If the idea of parking an oil-burning "zoom zoom" sedan in your garage sounds great you need to put on your hat of patience. Mazda has just announced that the Skyactiv-D equipped Mazda6 has been delayed.

The car has not been delayed due to emissions testing, rather Mazda feels the car doesn’t have quite the right driving dynamic. In its own words words the diesel Mazda6 needs to be tweaked to provide "the right balance between fuel-economy and Mazda-appropriate driving performance."

While it makes us a little sad that Mazda has delayed the introduction of this engine to the US market again, we can’t help but appreciate the desire to deliver the best-driving product they can.

With how much the gasoline-powered 2014 Mazda6 impressed us, it’s no surprise that Mazda is refusing to deliver a sub-par product.

Click past the jump to read about the Sktactiv-D engine.

Posted on by Simona  
Audi R20

In 2012, rumors swirled that Audi was working on a production version for the R8 V12 TDI concept that it unveiled at the 2008 Detroit Auto Show. Since then this model was up and down so many times that we ran out of fingers and toes to count it on on.

During a recent interview at the 2014 Detroit Auto Show, Audi technical chief Ulrich Hackenberg announced that such a model — rumored to be called R20 — was put to rest once again and that it was "an interesting idea but not a priority."

Even though this model is on the shelf for now, Audi really needs to develop a new supercar, as the R8 is starting to get a little wrinkly and a new generation R8 likely wouldn’t hold a candle to all of the recently launched hybrid supercars. In fact, even BMW finally decided to release the i8 after years of ups and downs, and we’re sure that Audi will shortly follow its steps.

Now its true that Audi also has in its plans the R8 e-tron , which has also seen its fair share of ups and downs, so maybe the restarting of the R8 e-tron talks at Audi headquarters sparked the shelving of the diesel-electric supercar.

Hackenberg also said that instead of the diesel-electric supercar, Audi will focus on developing a sub-2,200-pound version of the future TT . This model will likely be high-tech and perform well, but it definitely won’t satisfy the cravings of supercar junkies.

Click past the jump to read more about the Audi R8 V12 TDI Concept.

Source: Autocar
Posted on by Christian Moe +  

Mazda is preparing to enter the only diesel -powered prototype racer in the new Tudor United SportsCar Championship.

Diesel-powered racers have dominated endurance racing in the last decade. The 24 Hours of Le Mans has been won by an oil-burner for eight-years running. Even the FIA World Endurance Championship races have seen a diesel powered car on the podium at every single race.

Mazda is the only Japanese manufacture to win overall at Le Mans when it took the podium in 1991 with its rotary-powered 787B. Mazda is hoping that it can pull a page from Audi ’s book and is looking to diesel power to try and dominate the prototype class in the new TUDOR racing series.

We have all the details on this ambitious new race car and who will be driving it at Daytona later this month.


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