http://finance.yahoo.com/news/vw-recall-could-be-the-most-expensive-ever-194521326.html
VW must be looking at the cost of the US market vs future liability and the weighting the possibility of a complete US buy back costing less in the long run while they concentrate on the massive EU market problems they have.VW’s emission evasion will be costly because it can’t just send owners in for a new part or software upgrade, and call it a day. While the specifics aren’t yet clear, it seems likely that turning on the emission controls, which might be a simple modification in itself, will degrade the performance and fuel economy of the vehicles in question, making them more sluggish and less efficient. Given that VW’s turbodiesels, known as TDIs, tend to appeal to motoring buffs who care a lot about performance, VW could face a customer revolt.
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Offer to buy back vehicles. This could be very expensive, but it might be the most thorough way to earn back the trust of VW customers -- and placate regulators. And there’s precedent. Fiat Chrysler (FCAU) recently negotiated a deal with the government involving fire-prone vehicles from 1993 to 1998, which required the automaker to offer to buy the affected vehicles back from customers at market price plus 10%. Other Fiat Chrysler recalls negotiated as part of the same deal include discounts up to $2,000 (on top of any other offers) on new Fiat Chrysler models for owners who trade in one of the qualifying recalled vehicles.