Volkswagen has unveiled their long-awaited fix for the Dieselgate scandal in Europe.

Presented to Germany's Federal Motor Transport Authority, the fix applies to EA 189 four-cylinder TDI engines that displace 1.6- and 2.0-liters. 

First up, vehicles equipped with the 1.6-liter TDI engine will be outfitted with a new mesh "flow transformer".  Volkswagen says it "calms the swirled air flow in front of the air mass sensor and will thus decisively improve the measuring accuracy of the air mass sensor."  The company will also update the engine's software.  The entire service process should take less than an hour to complete.

Models equipped with 2.0-liter TDI engines will only require a minor software update.  As a result, the service is only expected to take about 30 minutes.

Volkswagen says the updates were designed to ensure the engines meet emission requirements without any adverse effects on performance or fuel consumption.  However, the company cautioned every variant hasn't been tested yet.

The fix has been approved by the Federal Motor Transport Authority and Volkswagen intends to begin a recall in January.  The company will be contacting customers and will work with them to ensure the process is as painless as possible.

While the fix covers most of the models affected by the Dieselgate scandal, the company intends to present the "final technical solution" for vehicles equipped with 1.2-liter diesel engines later this month.  Like the 2.0-liter TDI engine, the fix for the 1.2-liter engine is only expected to comprise of a software update.

Gallery: Volkswagen unveils Dieselgate fix in Europe, will require software updates

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