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    Thread: Real world gas mileage. 2.0 vs 1.8t?

    1. Member
      Join Date
      Oct 26th, 2002
      Allentown, PA
      06 Jeep Commander 5.7L. 96 Jetta 2.0
      06-15-2005 11:19 AM #26
      Real world, we do 95% highway driving.
      My wifes 2.0 auto gets about 24 highway (I know it sucks).
      My 1.8 manual w/revo 4bar, ghl TB and more gets 29 highway, 31 if I stay out of boost.

    2. 06-15-2005 11:25 AM #27
      yah vr6 isnt all that bad I can avg 29 highway easy, its all about driving style

    3. 06-15-2005 12:22 PM #28
      Quote, originally posted by gravitymachine »
      ...I've owned both back-to-back and I think real world I'd say they are equal if you have consistent driving habits. But the 1.8T sucks up way more gas when I pummel it, but the 2.0 I could stomp on all week and still not see any significant change in mileage. However, I find that when I drive the 1.8T "lightly" I can get way better mileage on the highway with the 1.8T...

      I concur. My previous car was a 2.0 Jetta and the mileage in my 2.0 was no better than what I can achieve with my 1.8T. Of course, the 1.8T seems to encourage driving with a heavy right foot, negating its inherent fuel economy advantage. Especially if it's been chipped and had the fuel pressure regulator upgraded.

    4. 06-15-2005 12:26 PM #29
      i get 22mpg with my 1.8t

    5. 06-15-2005 12:26 PM #30
      get a vr6 and stop being a cheap azz

    6. 06-15-2005 12:34 PM #31
      Quote, originally posted by 99VR6 »
      get a vr6 and stop being a cheap azz

      LOL. Yeah. My VR usually gets 30-31 MPG pure highway and has gotten over 33 once or twice. The long-term average for my 80-mile daily commute (which includes lots of stop-and-go, rush-hour traffic around the DC beltway) is just over 28 MPG. As has already been said, it's all about how you drive.

    7. 06-16-2005 09:08 AM #32
      i have a heavy foot on my 1.8t...dont get good gas mileage at all...lol...i have a turbo xs bypass valve aem cai 2.5 in cat-back exhaust and im running 15 lbs out boost daily...a little more than stock...it always seems like im throwing $20 of gas in it every 2-3 days...go 1.8t not vr6...more power less $

    8. 06-16-2005 09:50 AM #33
      No one has addressed it yet, but you're *never* going to find a TDI in your price range. They're too popular right now.
      I have a 1.8t with 15,000 miles on it, and I got it new. Mileage for the first 12k was mostly highway, and I started at 28mpg. By the end of that 12k, I was seeing as high as 32mpg. Then I switched wheels and tires from the stock 15" alloys and Michelin MXV4+ touring-class rubber to 18" Aristos with Goodyear F1 ultra-high performance summer tires. My mileage dropped from 32-ish to about 28-ish, just from the increased weight of the wheel/tire combo and the increased rolling resistance. My driving style didn't change; in fact, it may have become more conservative, as I wanted to avoid hitting a pothole in my new 18" wheels.
      If "economy" really is all-important to you, get the 2.0. Even used, there's still a price differential between the base engine and the turbo. If economy is not all-important, then get the 1.8t. You can generally get the same mileage out of it, but it's more fun to drive. *Especially* in a used car, it's nice to have the boost and the better torque and power, if not for fun, then for safety (passing, merging, etc.)
      And get a manual transmission. And buy tires made to improve fuel economy.

    9. 06-16-2005 10:00 AM #34
      Quote, originally posted by Blindsay05 »
      i get 22mpg with my 1.8t

      haha must be nice i dont even get 20 usually but thats b/c i do only city w/ my foot up the cars arst
      also 18"s w/ performance tires

      Modified by plangston at 7:03 AM 6-16-2005

    10. 06-16-2005 10:04 AM #35
      I own one of each. The '03 is a 1.8T and the '04 wagon is a 2.0. The 2.0 does get better mileage if it's driven primarily on the highway. In town I don't see much of a difference between the two if any. The 1.8T will SUCK gas if you've got a heavy foot and it's really no better (or worse) than the VR in that respect (and I have owned a VR MKIV also). On average though the 2.0 gets about 100 more miles per tank given. The most I've gotten out of the 1.8T in town (VERY conservative driving, no purposefully fun boostin) was 383 miles. I can get more on the highway if I keep it below 70mph. But as others have said, the TDI's aren't cheap and they don't go below MSRP if you buy a new one.

    11. Senior Member FlashRedGLS1.8T's Avatar
      Join Date
      Apr 17th, 2001
      06-16-2005 10:18 AM #36
      I get 28-29mpg in mixed driving.
      If I do a lot of highway it will go up to about 33-34mpg.

    12. Member
      Join Date
      Mar 1st, 2004
      2003 GTI 1.8T 5MT
      06-17-2005 12:35 PM #37
      I'm in a similiar boat. We're driving a '95 GL (auto) at the moment but i'm looking to step up to a MkIV Jetta GLS with a 5-speed. I thought my options were the 2.0L or TDI as fuel consumption is an issue for me - I want to better my fuel economy (currently getting ~400city/~650 highway) and reduce fuel costs. I figured the 1.8t or VR6 would be a sure fire way to increase my fuel consumption so they never made the list... especially with the 1.8t requiring premium (~$1/L these days). It's not the end of the world, but it does increase the cost of ownership. One of my mechanics also warned me about repair costs on the 1.8t should anything go wrong. So far, i've had absolutely no engine trouble with the 2.0L in my '95 and it's got 230000km's on it. He drove a TDI for a years and his wife is still driving a 2.0L.
      That said, i'm pleased to see that the numbers for the 1.8t are respectable and very close to the 2.0L when driven with a lighter foot.
      Personally, i've never understood why VW produced the 2.0L with such low output. Many competitors are able to produce 2.0L and 1.8L I4 engines with the same efficiency but 140hp or better. Odd...
      So, i'm taking another look at the 1.8t. Maybe I can make it work. The TDI (chiped) as gotten my attention lately tho...

    13. 06-17-2005 12:47 PM #38
      I have a Jetta 1.8t and if I drive it hard I can practically watch the gas gauge drop but if I'm doing all highway I've gotten 38 mpg a couple times.
      As far as mixed driving, if I'm careful not to puch it like i tend to do i can average 28-32.
      I'm guessing you could probably get slightly higher results with a 2.0 but if you like to drive go with the 1.8t ...you won't regret it

    14. 06-17-2005 02:59 PM #39
      Quote, originally posted by rsfnatik »
      Personally, i've never understood why VW produced the 2.0L with such low output. Many competitors are able to produce 2.0L and 1.8L I4 engines with the same efficiency but 140hp or better. Odd...

      on paper... until you go head to head with a stock 132hp civic and you realize, somehow, the 2.slow will pull on the civic.

    15. Member
      Join Date
      Dec 4th, 2001
      88 BMW M3/2001 BMW 325/ 2003 BMW 330
      07-25-2005 06:50 PM #40
      Our 1.8t get 20 miles per gallon on light driving.

    16. 07-25-2005 09:11 PM #41
      Seriously, if you can afford to buy a new car, you should be able to afford gas. Diesel scream conservatism.

    17. 07-25-2005 09:14 PM #42
      17 mpg on a good day with my sc'd 2.0 ....oh well I don't care about gas mileage or performance anyway
      Brandon A.

    18. Member Phrost's Avatar
      Join Date
      Mar 8th, 2004
      Green Bay, WI
      '11 Audi S4
      07-25-2005 09:22 PM #43
      I drive a 5speed 2.0... About 75% city and 25% highway. I don't drive nice, and I floor it a lot I get a little over 400 miles every tank, which puts me at an average of a little over 30mpg. The only mods I have are full exhaust, cai, and lots of maintenance

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