Advantages:
1) They sound cool while idling

2) They sound cool while running flat-out

3) The aroma of #2 diesel is considered by some to be an aphrodisiac

4) Secret diesel password gets you into prestigious 'two-pump' line at some truckstops

5) You can use words like 'turbocharger, wastegate and overboost' in your conversations (Sorry, this advantage not available to owners of normally-aspirated, 240D and 300D models)

6) Did I mention that they sound cool?

7) Nifty 'Jackson Pollack' style oil drop artwork on driveway

8) You can now put at least two extra gauges on your dash (Sorry, this advantage not available to owners of normally-aspirated, 240D and 300D models)

9) Amaze friends and confound enemies by pouring straight vegetable oil into your fuel tank and driving away (Sorry, this advantage not available to owners of direct injection models)

Disadvantages:
1) There are no disadvantages

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Never a dull moment at Berry Hill Farm.