VW and Audi are returning their Green Car of the Year® awards in the wake of Volkswagen Group’s admission that it deliberately deceived government authorities about emissions from the Audi A3 TDI and VW Jetta TDI. Concurrently, Green Car Journal has rescinded these Green Car of the Year® awards honoring the 2009 VW Jetta TDI and 2010 Audi A3 TDI diesel models. This is the first time this has occurred in the award program’s decade-long history.

The magazine points out that these models were selected as Green Car of the Year® for compelling reasons including high fuel efficiency, reduced carbon emissions, a fun-to-drive nature, and the ability to meet 50 state emissions requirements with advanced diesel technology. However, as VW Group has now admitted, its on-board software programming intentionally caused in-lab emissions testing to read significantly lower nitrogen oxide emissions than these vehicles actually produced on the road. Environmental Protection Agency and California Air Resources Board emissions certifications used in the process of determining award eligibility were thus incorrect, and have since been declared invalid by these government agencies. This means both models would have been ineligible to be finalists in their respective award years.

In returning its award, Audi of America President Scott Keogh advised the magazine, “Audi has won hundreds of races and thousands of awards throughout its history. But we only want to win fair and square. Therefore, in light of recent developments, we believe the only right thing to do is to return this important recognition of environmental stewardship. We are determined to compete – and hopefully win – Green Car of the Year® awards the proper way in future years.”

Green Car Journal points out that the award rescission and unfortunate news surrounding Volkswagen Group's wrongdoing should not cast a negative light on advanced diesel technology in general. Many diesel models from a variety of auto manufacturers meet EPA and CARB emissions standards, bringing with them higher fuel efficiency, decreased petroleum use, and lower carbon emissions – all important environmental goals. Many are also approved for use with renewable biodiesel fuel.

The annual Green Car of the Year® award recognizes the vehicle model that best raises the bar in environmental performance. Efficiency, EPA/CARB certified emissions, and overall environmental improvement are considered along with market significance, value, and widespread availability to consumers. Recent Green Car of the Year® winners include the 2015 BMW i3; 2014 Honda Accord, including gas, hybrid, and plug-in hybrid variants; and 2013 Ford Fusion, including gas, hybrid, and plug-in hybrid models.

It’s hard not to wear a broad grin while driving Audi’s 2014 A6 TDI. One of a growing array of upscale TDI models in the Audi stable, the $57,500 A6 TDI presents a compelling case for premium mid-size sedan buyers to go clean diesel. Time behind the wheel illustrates the well-balanced nature of the A6 TDI, which artfully blends luxury, comfort, performance, and efficiency in a very desirable package. Plus, it’s just fun to drive.

The A6 TDI’s 3.0-liter turbocharged direct injection V-6 is surprisingly quiet and smooth, dispensing with the two inherent challenges that diesel as a whole has faced in attracting U.S. buyers in the past. Ride quality, handling, and overall driving characteristics are excellent. The A6 TDI is powerful, with strong low-end torque pressing you back in the seat with ease while delivering 240 hp and an impressive 428 lb-ft torque. All this power is channeled to the highway via an 8-speed tiptronic transmission and quattro all-wheel drive. Acceleration from 0-60 mph is achieved in a quick 5.5 seconds.

This level of power-at-the-ready does not sacrifice efficiency as one might expect, particularly in highway driving as the model achieves a rather impressive 38 mpg. Total driving range of over 700 miles is possible. The TDI clean diesel’s inherent efficiency is bolstered with other efficiency measures including a relatively lightweight chassis and aluminum body panels, plus a start-stop efficiency system that shuts the engine down under specific conditions such as extended idling or at stoplights. The engine restarts instantly when a driver releases the brake pedal.

Driving performance and efficiency are just part of the story with the Audi A6. This model makes a point of enveloping driver and passengers in a luxurious and accommodating interior, paying great attention to detail throughout the cabin with a curved wraparound dash, fine leather, and high-end materials. Instrumentation and controls are well placed and intuitive.

Infotainment and connectivity features are extensive with MMI Navigation plus and Audi connect, which offers Google Earth mapping and in-vehicle Wi-Fi connectivity for up to eight wireless devices. Available are an array of sophisticated features including night vision assistant, heads-up display, and Audi pre sense plus, the latter system helping to detect imminent collisions and initiate protective measures.

The A6 TDI presents a very upscale exterior with sharp lines and unmistakable Audi design cues, among these Audi’s signature LED lighting technology. Add in efficient and responsive TDI power and the package gets even more compelling.

 

We are all enamored by the advanced technologies at work in vehicles today. And why wouldn’t we be? The incredibly efficient cars we have today, and the even more efficient models coming in the years ahead, are testament to a process that combines ingenuity, market competitiveness, and government mandate in bringing ever more efficient vehicles to our highways.

It’s been a long and evolutionary process. I remember clearly when PZEV (Partial Zero Emission Vehicle) technology was first introduced in the early 1990s, a breakthrough that brought near-zero tailpipe emissions from gasoline internal combustion engine vehicles. That move was led by Honda and Nissan, with others quickly following. Then there were the first hybrids – Honda’s Insight and Toyota’s Prius – that arrived on our shores at the end of that decade. Both technologies brought incredible operating efficiencies that drastically reduced a vehicle’s emissions, increased fuel economy to unexpected levels, or both.

Of course, there were first-generation battery electric vehicles in the mid-1990s that foretold what would become possible years later. That first foray into EV marketing was deemed by many a failure, yet it set the stage for the advanced and truly impressive EVs we have today. Those vehicles may not yet be cost-competitive with conventionally powered vehicles due to very high battery costs, but that doesn’t diminish the genius engineering that’s brought them to today’s highways.

Even conventionally-powered cars today are achieving fuel efficiency levels approaching that of more technologically complex hybrids. Who would have imagined popular cars getting 40 mpg or better, like the Dodge Dart, Chevy Cruze, Mazda3, Ford Fiesta, and many more in a field that’s growing ever larger each year?

VW and Audi have proven that clean diesel technology can also achieve 40+ mpg fuel efficiency while providing press-you-back-in-your-seat performance, and importantly, doing this while meeting 50 state emissions criteria. That’s saying something considering diesel has historically had a tough go of it meeting increasingly stringent emissions standards in California and elsewhere. Yet, with elegant engineering by these automakers and their diesel technology supplier Bosch – plus this country’s move to low-sulfur diesel fuel late last decade – ‘clean’ diesel was born.

I would be remiss if I didn’t mention natural gas vehicles. There was a time when quite a few automakers were exploring natural gas power in the U.S., but that faded and left Honda as the lone player in this market with its Civic Natural Gas sedan. Now others are joining in with dual-fuel natural gas pickups and vans, benefitting from advanced engine technologies, better natural gas tanks, and a sense that with increasing natural gas reserves in the U.S., demand for natural gas vehicles will grow. As Honda has shown with its Civic, it’s possible to operate on this alternative fuel while also netting admirable fuel efficiency.

All this advanced powertrain technology is important. It makes air quality and petroleum reduction goals achievable, even ones like the ethereal 54.5 mpg fleet fuel economy average requirement that looms for automakers by 2025. There’s no doubt that advanced technologies come at a cost and reaching a 54.5 mpg average will require the full range of efficiency technologies available, from better powerplants and transmissions to greater use of lightweight materials, aerodynamic design, and answers not yet apparent. But I’m betting we’ll get there in the most efficient way possible.

 

Ron Cogan is editor and publisher of Green Car Journal and editor of CarsOfChange.com