Volkswagen diesel cars


Volkswagen diesel cars

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    Volkswagen AG (AUTOSANLORENZO.EU) has paid more than $ billion to buy back about , U.S. diesel vehicles through mid-February, a recent.

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    Volkswagen diesel cars

    Volkswagen diesel cars

    In June , documents leaked to the press indicated that in , European Commission officials had been warned by their in-house science team that at least one car manufacturer was possibly using a NOx-related defeat device in order to bypass emission regulation. In , the European Commission's Joint Research Centre published a report which found that all tested diesel vehicles emitted 0. As of 29 September , Sweden's chief prosecutor was considering starting a preliminary investigation into Volkswagen's emissions violations. Archived from the original on 18 September As of October , Volkswagen Brazil confirmed that 17, units of its Amarok mid-size pickups produced between and and sold in Brazil were equipped with the emissions cheating software.

    Volkswagen diesel cars

    Volkswagen diesel cars

    Volkswagen diesel cars

    Volkswagen diesel cars

    Volkswagen diesel cars

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    And should you buy one now considering thousands are for sale? Good news, owners and shoppers: For the largest chunk of affected cars, the fix appears to come at minimal cost, so buy away. Last summer, authorities approved an emissions fix for the oldest batch of scandal-plagued diesel TDI VW vehicles, a group of smaller models with four-cylinder "Generation 1" diesel engines from the model years. Comprising a little more than half of all the U.

    We brought our TDI to a local dealership for the mid-day procedure, which took a few hours, and we tested mileage, acceleration, and horsepower and torque before and after to see what changed. Our findings suggest you can breathe easy — and not just thanks to the TDI's reduced nitrogen-oxide emissions. In our experience, acceleration and mileage differences with the aren't enough to lose sleep over. The dealership's fix for our TDI involved hardware and software modifications.

    Volkswagen diesel cars

    It also came with a downgrade in stated EPA vehicle mileage estimates, complete with a new printout of window-sticker ratings. We observed a similar reduction in fuel economy during two nearly identical mileage loops around Cars. But our Jetta continued to handily beat its EPA numbers each time. Both loops began and ended at the same diesel pump in Chicago's far-west suburbs, racking up some miles of highway, suburban and rural streets around the metro area. That's only a short sample of fuel economy, so we'll hang onto our TDI a little longer, continuing to track fuel economy.

    That's a difference of just 4. Data came from the VW TDI's trip computer — not at-the-pump calculations, which proved too disparate to rely on. For both loops we avoided cruise control, filled the tires to their recommended pressure, kept the windows and sunroof shut and drove in the TDI's regular not Sport mode. Ambient temperatures fell within 10 degrees of each other for both tests. We also took our Volkswagen TDI to a local dynamometer facility, which tested horsepower and torque before and after the emissions fix.

    Volkswagen diesel cars

    Results of maximum horsepower and torque, as well as the output curve throughout the rev range, were similar. Both results were in weather-corrected outputs running the front wheels only. Remember, dynamometers — essentially giant floor rollers that act as vehicle treadmills — can read differently depending on style, but we're confident these are consistent results because we used the same dynamometer, operator and calibrations just days apart.

    The differences were slight. After the emissions fix, peak vehicle horsepower and torque fell just 1. Successive acceleration runs only drove the similarities home. The TDI is not quick overall , but the fix didn't affect that. Both runs were conducted during similar weather conditions and straightforward pedal-down acceleration — no brake-torque starts — with measurements on a RaceLogic Vbox II GPS data logger. The post-scandal VW TDI remains a torque machine, with enough low-end oomph to overcome its unresponsive six-speed automatic transmission.

    Volkswagen also says shift programming changes with the fix, with normal mode shifting at slightly higher engine speeds than before, and Sport mode slightly lower.

    Volkswagen diesel cars

    We observed no significant difference on either front. It still takes a concerted stab on the accelerator pedal to induce a downshift, but the early wave of torque means you can ratchet up speed even if the transmission camps out in a high gear. The Volkswagen Group's Gen-1 diesel vehicles account for about 55 percent of the nearly , U.

    Gen-1 diesels — all EA 2. Regulators approved a fix for the batch, considered the hardest nut to crack , in mid Two later generations of diesel four-cylinder engines, as well as a diesel V-6, are all involved in the emissions-cheating scandal.

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