By on November 24, 2015


A German environmental group said Tuesday that its testing has revealed Renault’s Espace, when equipped with a 1.6-liter diesel engine, could emit up to 25 times the allowable limit of nitrogen oxides with a warm engine running on roads — or you know, the real world.

According to the New York Times, the Deutsche Umwelthilfe (DUH) didn’t directly accuse Renault of including cheating software in its cars — a la Volkswagen — but said the van polluted significantly less when the engine was cold. The results could show the schism between European testing standards — where tires can be over-inflated, doors taped up, batteries disconnected, seats removed — and real-world conditions.

Renault said in a statement Tuesday that its van complied with regulations and that tests done by researchers at the University of Bern “are not all compliant with European regulations.”

According to researchers, Renault’s van was selected because researchers at the International Council for Clean Transportation said in September that the car was particularly prolific in polluting with “frighteningly high real emissions.

In our investigations, a certain pattern showed. Only when it has been prepared in a very specific form … (it) passed this with flying colors. Any deviations in the preconditioning or testing … led to diesel exhaust values ​​that we have never measured at this level,” Jürgen Resch, Federal Managing Director of the DUH, said in a statement. 

Last month, the German group said the Opel Zafira polluted up to 17 times more nitrogen oxides than allowed by European limits. General Motors denied the claim and said its car complied with regulations when tested by Germany’s TUV certification group.

“It’s unbelievable that so-called modern diesel vehicles that damage the air we breathe in this way are on the road today,” ICCT co-founder Axel Friedrich said in a statement, according to Reuters.

In its testing, the ICCT claimed that Renault, Volvo and Hyundai produced diesel engines that very likely would fail real-world tests, although none of those vehicles are on sale in the U.S. Audi and BMW both produced cars that qualified as “poor” according to the ICCT and would have difficulty passing real-world testing.

In its statement announcing the Renault results, the DUH called for a near-ban on all diesel cars, including Volkswagen’s 3-liter engine that the automaker admitted uses three auxiliary emissions control devices to alter pollution levels.

“It begs the question, what lessons have the German inspection authorities about this … software, which is obviously at VW, Audi and Porsche also in use in Europe,” Resch said in a statement. Measurements of (an) Audi A8 sedan by our umbrella organization T & E showed the NOx limit value was exceeded by almost 22 times on the road … (it’s) thus one of the dirtiest Euro 6 diesel cars at all.”

A car dealer in Germany was asked by the German newspaper Süddeutsche Zeitung if he’d further discount Volkswagen diesel cars because those cars specifically cheated emissions rules. “The people know well that all producers cheat on the Diesel test,” he replied.

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11 Comments on “German Environmental Group Claims Renault Van Pollutes Up To 25 Times Euro Limit...”

  • avatar
    SCE to AUX

    He said, she said.

    One important detail that hasn’t been covered (or I’ve missed) is this: emitting 10x, 25x, or 40x the pollutants is relevant only when the time duration of that spike is considered.

    We tend to assume these high emissions are happening continuously, when I’ll bet they are not. I’d like to know how they add up when time-weighted for a proper journey, per the test protocol.

    • 0 avatar

      “emitting 10x, 25x, or 40x the pollutants is relevant only when the time duration of that spike is considered.”

      Yes, there does seem to be some gamesmanship with the numbers. It’s not as if NOx levels remain constant during an extended period of operation.

  • avatar

    “The results could show the schism between European testing standards —where tires can be over-inflated, doors taped up, batteries disconnected, seats removed — and real-world conditions.”

    No it does not.

    This is about NOx levels. What you’re talking about and gossip which is in no way proved in any serious report I’ve seen is about CO2 and mileage.

    Come on Aaron. Time to clear up the cobwebs in your mind. NOx poison – bad. CO2 natural output of engines and humans, well who knows yet.

    Second confused article today. If I’m being charitable calling it merely confused.

    • 0 avatar

      Yeah, C’mon, Aaron… you can’t flunk woomba’s class and still graduate this semester!

    • 0 avatar

      “What you’re talking about and gossip which is in no way proved in any serious report I’ve seen is about CO2 and mileage.”

      I already provided you with a report from the European Federation for Transport and Environment that says otherwise. Did you not read it?

  • avatar

    The “Deutsche Umwelthilfe” (DUH) is as reliable as PETA. I’d be careful in both cases to cite them.

  • avatar

    Nitpicking: The espace is not a van, it used to be a minivan/MPV but the current generation is a crossover.

    I do believe that the car dealer is on to something given that independent testing, not just this one test that I have some doubts about due to the organisation paying for the testing, always seems to find that the pollution/fuel consumption numbers are way higher than claimed when the car is used in the real world. Not exactly cheating as the numbers usually matches when the testing is done in exact accordance with the EU protocol, but a small change in the testing parameters and the emission and consumption numbers shoots up.

  • avatar

    A pressure tactic between the French & German government.

  • avatar

    It would be worthwhile to review the mandated NOx limits through time to compare the actual amounts, from unregulated to current status. (Hint) I can’t find it (actually haven’t invested the time), but I thought that the latest reductions to 0.07 and 0.05 gr/mile represented a 99%+ reduction from unregulated. That being so, 10X the allowed emissions would put us back in the bad old days of 2008 and before. How bad was that?

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