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Jeep Wrangler Real World MPG

32 messages,  Last post on Apr 27, 2009 at 6:00 PM

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What is this discussion about? Jeep Wrangler, Jeep Wrangler Unlimited, Jeep Scrambler, Jeep CJ-5, Jeep CJ-7, Fuel Efficiency (MPG), SUV

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#13 of 32 Re: Diesel Please! [jeepernut] by podedwards Jun 03, 2007 (6:50 pm)
Replying to: jeepernut (Jul 26, 2006 5:44 pm) A diesel engine will cost about $4000 more than a gas engine. Auto diesel may be lower or higher than regular gas but expect it to be essentially the same on average. If a diesel engine is used for long haul highway driving it might be expected to get 25% better mileage but with the way the average person drives it might only be 2% to 5% better or maybe the same. The taxes and insurance for a more expensive car is always more expensive and the illusion that diesels are less costly to maintain is a fiction unless the vehicle is driven many more miles than the average driver at highway speeds. The proper motor oil is more expensive and more oil is needed when it is changed. In reality, diesel engine oil needs to be changed more often (and requires lots more oil)than gas engines because diesels operate at much higher temps than gas engines which means oil change is absolutely critical to its life.In gas engines the oil lubricates while in diesel engines it has to lubricate and cool. More expensive oil filters are required because even modern auto diesel is not a clean as gas and the contaminants are caught in the oil.   Then there is the water separator which is very expensive to replace and has to be replaced more often if the engine is not kept running most of the time. Most all diesel engines have turbos to increase horsepower and turbos are notoriously hard to maintain.   The primary function of a diesel engine is its capacity to move heavy loads because of its increased torque/horse power ratio. Better mileage is only accomplished by moving heavy loads over long distances.   Modern gas engines are simply superb with great longevity, dependability and performance.   As far as the fabled "they are going to diesel in Europe" line, examine why. Socialist governments dictate what refineries can produce and what cars can be built. The transportation systems of Europe and America are vastly different and for good reasons. Europe has lots of public transportation for which they are very heavily taxed-want to pay lots more taxes?   No public transportation system in America pays for itself and is always tax payer dependent. And, most importantly, Europe is being strangled by their taxes are are seeking desperately to abandon them by electing more conservative governments. Replies to this message: mac24 (Jun 03, 2007 7:31 pm)
#14 of 32 Re: Diesel Please! [podedwards] by mac24 Jun 03, 2007 (7:31 pm)
Replying to: podedwards (Jun 03, 2007 6:50 pm) More expensive oil filters are required because even modern auto diesel is not a clean as gas and the contaminants are caught in the oil. Then there is the water separator which is very expensive to replace and has to be replaced more often if the engine is not kept running most of the time. Most all diesel engines have turbos to increase horsepower and turbos are notoriously hard to maintain.   Good description of the average diesel, but I disagree with the part quoted above.   I drive a very typical American diesel V8 turbo, and oil filters are cheaper than those for my Wrangler. The fuel filter is much more expensive ($13) but only needs changing every 6K miles, which is at every other oil change. As well as cleaning the fuel, that filter together with the design of its housing also separates any water, which can easily be drained. It's a very common system and no extra cost is incurred. Finally, a turbo requires no maintenance apart from regular engine oil and filter changes, and being allowed to spool down for a few minutes at idle after a long run.   Modern gas engines are simply superb with great longevity, dependability and performance.   I agree with that also..........100%!
#15 of 32 2007 Unlimited by sciguy85 Jul 09, 2007 (9:35 pm)
240 miles. 1st fill up. Combined town and highway 19mpg. Just town with air dropped it to 16 mpg. Not bad considering my Buick Rendezvous gets about the same in town and it has 25 less HP. After a few thousand miles it should do even better. Cross my fingers.
#16 of 32 Diesel sucks by floko Jul 09, 2007 (11:45 pm)
Hi! Here in Austria, everyone wants to drive diesel. But I tell you what ... the Wrangler Diesel sucks. No power, no sound. Forget it!
#17 of 32 Re: Diesel Please! by theronrohr Jul 10, 2007 (8:36 pm)
I pretty much agree also. Diesels have their pros and cons. I had a VW Golf TDI for 6 years. While I lived in the Boston suburbs I was happy with it. It got 40mpg and was cozy and comfortable. Then I moved to central Los Angeles and started to not like it so much. In city traffic it spends more time in its "grumpy zone" under 1500rpm where it has no power and makes a lot of noise - which I heard more clearly because I always had the window open. It is good in the mountains though but again once it gets up some steam. Its embarrasing starting uphill from a dead stop.   Also in my case repairs an maintenance costs pretty much cancelled out the fuel savings. The thing I hadn't forseen was that because it was fairly rare parts and service know-how were also very rare and led to longer wait times for the 3 unexpected shop visits it had.   I'd say in the end if you really do drive a lot of miles then get a diesel but average drivers should probably skip. Don't forget in Europe tax policy makes diesel much cheaper than gas.
#18 of 32 680 miles MPG by sciguy85 Jul 22, 2007 (11:26 am)
07 Unlimited X 4 door> Strictly city 14, all hiway 18.5 into the wind, 20+ with the wind. Mix 18-19 MPG
#19 of 32 Mileage by guy21 Jul 23, 2007 (4:35 am)
07 X 2 door 6 speed > 300 highway miles 65 mph = 22 mpg Replies to this message: sciguy85 (Aug 17, 2007 6:40 pm) edf4 (May 21, 2008 6:51 pm)
#20 of 32 Re: Mileage [guy21] by sciguy85 Aug 17, 2007 (6:40 pm)
Replying to: guy21 (Jul 23, 2007 4:35 am) 07 Unlimited, 4x4,6 cyl, auto, 2000 miles on the clock, overdrive off, 2300 lb trailer, 17 highway/rural/stop and go. Replies to this message: edf4 (May 21, 2008 6:51 pm)
#21 of 32 Re: Diesel Please! [jeepernut] by juslooking Aug 30, 2007 (3:56 pm)
Replying to: jeepernut (Jul 26, 2006 5:44 pm) I also have the CRD and it is a POS. EGR valve is 500 buck fix, the fuel filter is 35 bucks, the oil is 27 bucks a gallon it takes 7.5 quarts to fill it with oil, the tranny fluid is 7 bucks a quart and it takes 14 quarts to fill the tranny, they put the same powertrain behind the CRD as is behind the Hemi and that is also a POS tranny and a bone head move.

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