Most guys here seem to agree, it will cost more to operate a 4wd truck compared to a 2wd truck. Both in gas and maintenance down the road. Plus there are more parts in the driveline. That eventually means more parts to service. Do you really need 4wd? Probably not. Most people very rarely use 4wd mode and when you do, that's when they really start to chug the fuel. I deal with snow and ice for 4 months of the year and I rarely "need" to use 4wd mode. I have owned both 2 and 4 wheel drive trucks and on a daily basis, 2wd trucks are a better choice. My current truck is 4wd but I got it used and most of the ones I looked at were all 4wd so I didnt really have a lot of choice. Maybe what you should really be asking yourself is do YOU really need 4wd for what you do? Do you really want it? Those are 2 different questions all together. If it's something you really want, shell out the extra cash and get it. You're the guy that has to drive it every day so make sure you get what you want for the right reasons for you.Would gas mileage on a 4WD Tundra be significantly less than a 2x4 ?