Last week I was invited to attend a special event for bloggers at GM's Proving Grounds in Milford, Michigan. The program included taking us through the GM Safe Driving program and having lunch with several GM designers and executives before an afternoon of test driving a variety of vehicles from GM's 2008 line. Only a couple of hybrids were in the lineup. I was looking forward in particular to seeing the Saturn Vue GreenLine, but it wasn't available. However, there were two other hybrids among the two dozen or so vehicles that were there: the Saturn Aura GreenLine sedan and the GMC Yukon Hybrid SUV.
A hybrid full-size truck may seem a bit oxymoronic at first. And if you are driving it by yourself without any passengers or cargo most of the time, then it is, if not oxymoronic...then at least moronic. But for people who need the capacity and features of a vehicle like the Yukon, having one that is a hybrid makes a great deal more sense than having one that is not.
According to GM's estimates*, the 2008 hybrid Yukon gets 20 MPG in city driving and 21 MPG on the highway, which isn't quite in the same league as a Prius, but then a Prius isn't going to haul a 3-ton trailer, either.
Unlike the Saturn Aura sedan, which I also took for a turn around the track, there are times I knew that I was driving a hybrid. The Yukon's gas engine is completely off when it drives at low speeds. I found that while wending my way through a series of cones (laid out to simulate city driving), if I kept my speed down to 10 mph or so, I was driving solely on the electric motor. When I punched the accelerator to make a turn after coming to a stop, however, it responded immediately with the gas engine to provide the power to accelerate.
The Yukon is far removed from my normal driving experience, so I can't say a lot about how it rates as an SUV. It was big and roomy, as you would expect from an SUV. If you're sure you need the functionality of an full-size SUV, then improving your fuel efficiency with that vehicle can be a step in the right direction.
* "Yukon Hybrid with estimated MPG 20 city/21 highway. Based on GM testing. Official EPA estimates not yet available. Note: Yukon 2WD (Gas) city/highway MPG: 14/20." (GMC website)

written by Hank, October 04, 2007
I don't see why people get so angry about hybrid SUVs. If there's no legislation to prevent the creation of these monsters, and people continue to buy them...why not make them fuel efficient?
written by iDevin, October 04, 2007
I think it would be much better if they put this hybrid system in all their pickup trucks as those are used professionally and in fleets and thus would likely have a higher rate of adoption than SUVs. Businesses are more likely to look at total cost of ownership over the life of the vehicle where consumers purchasing will be looking at the bottom line and are more likely to balk at the hybrid premium.
written by Hank, October 04, 2007
written by John Fill, October 04, 2007
20-21 mpg is appalling, I ride a 1989 Honda CBR400RR, it does 0-60 in 4.5 seconds, 140mph top speed... and returns 65-70 mpg. Two wheels are the way forward, especially for commuting.
written by geekpdx, October 04, 2007
I'm glad you're riding a motorcycle, but it baffles me when people present something right for their needs as right for the needs of all.
20/21 mpg may be appalling, but that's the exact mileage I got in my last small four-cylinder car. Which is easily bested by the mileage I now get in my four-cylinder SUV. That's a large step forward for bigger vehicles, and surely one that will force the mileage of smaller vehicles up even further, since you can't sell smaller vehicles if your larger ones get better gas mileage, and there's a lot of money to be made of the portion of the country that doesn't drive large SUVs or trucks.
written by Eric, October 04, 2007
If you do the math, taking a 40mpg car and doubling the mileage to 80mpg does NOT save as much fuel as taking a 10mpg car and doubling it to 20mpg.
If the average person drives 150 miles per week, then:
14mpg = 10.7 gal
21mpg = 7.14 gal is 3.56 gal savings
40mpg = 3.85 gal
80mpg = 1.925 gal is 1.925 gal savings
If you aren't going to drive less miles, you'll save more gas switching to a from a standard SUV to a hybrid SUV.
Obviously, switching from 14mpg SUV to a 40mpg hybrid will save the most gas, 6.85 gals.
written by Jason Des Forges, October 05, 2007
It still surprises me that the ecological thinking I have had since childhood is becoming mainstream now.
written by Uncle Mike, October 16, 2007
written by Harvey Bails, November 16, 2007
written by Fireball, November 16, 2007
written by Herb C Ragle, November 16, 2007
written by Angie, November 17, 2007
written by bob, November 17, 2007
written by Wascal Wabbit, November 17, 2007
In the second place, what we see driving on California freeways every day are 90% of SUVs being driven by a single occupant as a commute car. That occupant is almost always trying to use a huge vehicle to compensate for a shortage elsewhere. That goes for women too. They get behind the wheel of one of those monsters and suddenly they are as powerful as Schwarzenegger. So I laugh at all you "my dogs bigger than your dog" obliviots when I see you pumping a week's pay into your gas tank. I do have a lot of sympathy for those folks who really do need the 4 wheel drive though.
written by Andrew, November 17, 2007
written by Mary Matthews, November 17, 2007
Yes, there are going to be those who drive Cadillac Escalades for show (my employer) and there are those who drive Cadillac Escalades in order to fit three children's safety seats in the back seat (my niece). Occasionally they are BOTH going to be driving down the road with no passengers, with people making judgements on them.
Some people have the need for large vehicles or full-size pick-up trucks. I, myself, as an estate gardener, tried to get by with a small Toyota pick-up and found I was using more gas because I was making so many trips back and forth to pick up plants and supplies that wouldn't fit in the truck bed. I sold it abn switched to a ful-size Chevy and cut my gas usage in half. Yes it's the only vehicle I have and is also my personal vehicle, so that situation makes me think twice about the errands I run. I don't just run out to Target whenever I feel like it; I combine trips in a route to be more efficient.
I guess the point I'm trying to make is that ALL attitudes must change. You who drive the tiny little gas-sipping vehicles need to realize that there is a need for larger vehicle and that, at times, they are the more efficient choice based on the needs of the driver. The gas-guzzlers who drive large vehicles for vanity's sake need to learn that there are better, less environmantally detrimental ways to look cool. In the meantime, we need the hybrid SUVs to help everyone gravitate to the middle.
Another personal note...my Faithful Chevy truck, Betty, is about to go and live on a friend's farm in the Texas Hill country where she'll only be driven a few hundred miles a year. I'm about to but a hybrid SUV to haul flower arrangements about for a floral design business. I'm glad to know there is something large enough for me to use to cut down, again, on the back and forth trips that waste so much gas.
written by Roadrunner, November 17, 2007
You guys don't even talk about driving as being something fun, and it can't be fun if you don't enjoy the vehicle. I'm glad some of you can get you kicks from seeing just how many miles per gallon you can get, or how many miles more you can get more than someone else. I'm glad some of you like being able to be so uber smug about having the "greenest" next new thing. That's great, because you are going to off-set some of the fun I and those like me are going to have.
On a related note, the Vikings farmed Iceland in the twelve and thirteen hundreds. Seems to me the earth must have been significantly warmer then than now. I just ask you look at the past for as far as you can see and think.
written by Smoker, November 17, 2007
written by Alex, November 17, 2007
written by Phaedra, February 17, 2008
written by BK, March 06, 2008
Can I work from home in the mornings? Can I come in early enough to miss rush hour? Can I work from home every other day? Could I "sell" my boss on the idea that it is cheaper from a real estate/facilities perspective and more productive for me to work from home? Can I carpool? Is it nice enough outside to ride a bike today (maybe double up on the good juju and work off my beer gut/big butt?) It's all about sensibility here. It's about mitigating your environmental impact - you will never eliminate it. If there is some common sense applied, we just might reach homeostasis and not be the harbingers of our own demise.
written by Texas Driving, June 23, 2008
My only complaint is that I can't have captain chairs in the second row and the third row is way too small. They should have moved the second row seats forward about 2-3 inches and it would have helped a lot.
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Conservation without compromise does not equal 20/21mpg and those are the optimistic figures.
EcoGeek - if this was April 1st it would be amusing rather than facile.