quote: Most smaller European diesels don't currently need urea injection, but new "Euro 6" emissions standards will arrive in September 2014. They're roughly equivalent to U.S. standards that have seen urea injection fitted to every passenger diesel sold in the States except the Volkswagen Golf and Jetta and 2014 Mazda6 diesel.
quote: At some point, the extra expense of a diesel car simply won't be worth the extra money
quote: Longer-term maintenance is causing worries too, with those necessary particulate filters often failing for city-bound drivers.
quote: economical low engine speeds mean exhaust gases don't get hot enough to burn off the particulate matter--leading to clogged filters and expensive replacements.
quote: Small gas engines improving
quote: Today, they're starting to disappear, replaced by tiny-capacity, turbocharged gasoline engines like Fiat's TwinAir and the 1.0-liter Ford Ecoboost. Volkswagen has said it will build no future diesel of less than 1.6 liters for its volume cars.
quote: there's much less difference in gallons of fuel consumed.