Why wasn't the new or reintroduced VW Volkswagen Beetle made with air cooled engine like the earlier bug?

As above, when they started making the new beetle 10 years back or so, why not use air cooled engine like the old VW bug? Why hasn't any carmaker used air cooled engine since then?Why wasn't the new or reintroduced VW Volkswagen Beetle made with air cooled engine like the earlier bug?THE NEW BEETLE WAS THE FIRST CAR SOLD IN AMERICA BUILT ON THE THEN NEW GOLF PLATFORM.

VW WOULDN'T BUILD A SPECIAL PLATFORM FOR ONE CAR.



PORCHE DOESN'T USE AIR COOLED ENGINES ANY MORE WHY SHOULD VW?Why wasn't the new or reintroduced VW Volkswagen Beetle made with air cooled engine like the earlier bug?Exhaust emissions, heating was a problem...Why wasn't the new or reintroduced VW Volkswagen Beetle made with air cooled engine like the earlier bug?air cooled engines run into over heating issues too much to be successful. the old bugs were fine but leaked oil pretty bad too.Why wasn't the new or reintroduced VW Volkswagen Beetle made with air cooled engine like the earlier bug?
From my understanding from VW, the issues are ones of cost. Air cooled engines run hot; in order to cool them down, they use large "fins" for cooling air flow to reduce temperatures. Because of horsepower issues, emissions, fuel economy concerns and weight, air cooled engines are at a majour disadvantage vs. water cooled motors. Oil leaks which are fairly common on air cooled motors would be a disaster on a air cooled motor created to meet todays emissions and fuel economy standards. On stock VW Beetles, cylinder #3 is known to overheat and have piston problems due to the lack of air flow to cool the piston barrel and head assembly.



Todays engines work on a very tightly controlled temperature and computer operations to deal with emissions and fuel economy. As it has been explained to me, air cooled motors have a much wider temperature range that is very hard to control; fans could do the job, larger surface area of fins (either more of them or/and larger ones), but this increases cost. Water cooled motors allow for a much tighter temperature control, thus making it easier to control various emissions levels, yet, allow the engine temperature to run right at the edge of improving thermal efficiency, without going into overheating. And then there is the issue of oil cooling; it would need a fairly large oil cooler to keep the engine oil from overheating and becoming jelly.... Finally, there is the issue of a heater/defroster operation. The issues of the lack of an effective heater and defroster are legendary to both the public and Beetle owners alike; various attempts to improve the air flow of the heater and defroster have only had marginal effect at making the interior environment more comfortable. The gasolene powered heater that was sometimes used in the type II and other models as an aftermarket option (and in the original year of the Corvair) generated enough heat, but often had odor issues and decreased fuel economy in the process.



Hope this sheds some light into your inquiry, a car nut.