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Old 11-29-2010, 08:56 AM
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V6 vs. V8

I am about to order a new Overland. I am sold on the Advanced Warning and Adaptive Cruise Control, but I am really struggling with whether to go V6 or V8. I have no intentions of towing or going off-road. Most miles will be Highway or City. I live in New England so weather can be just about anything. All comments are welcome.
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Old 11-29-2010, 09:03 AM
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Re: V6 vs. V8

V8, better to have the power and not need it.
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Old 11-29-2010, 09:10 AM
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Re: V6 vs. V8

I had the same struggles. I ended up deciding on the V8. Here's what did it for me:

(1) V6 is a new engine and has no history in terms of its dependability over time.
(2) Overland is a HEAVY vehicle. The V6 works extra hard to move this GRAND machine.
(3) V8 is a tested, over time, engine and MOVES the Overland effortlessly.
(4) The difference in the MPG between the V6 and V8 is too small (in my opinion) to really sacrifice the power you get with the V8.
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Old 11-29-2010, 09:19 AM
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Re: V6 vs. V8

Quote:
Originally Posted by Mark Paul View Post
I had the same struggles. I ended up deciding on the V8. Here's what did it for me:

(1) V6 is a new engine and has no history in terms of its dependability over time.
(2) Overland is a HEAVY vehicle. The V6 works extra hard to move this GRAND machine.
(3) V8 is a tested, over time, engine and MOVES the Overland effortlessly.
(4) The difference in the MPG between the V6 and V8 is too small (in my opinion) to really sacrifice the power you get with the V8.
I own V6.

1) - agreed

2) - It doesn't "work extra-hard to move this GRAND machine"

3) I test-drove V8 and V6. On highway passing the was no noticeable difference. There may be from the stop but I haven't tested it.

4) I am only at my second tank of gas but so far I am not getting anywhere close to advertised mileage during city driving - it is around 11-12 MPG

Another important thing to keep in mind is "Hemi tick". Google it if you don't know what it is.
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Old 11-29-2010, 09:37 AM
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Re: V6 vs. V8

Drive them both, get on the highway and try to pass cars with both. If there are any hills in your area drive them. The "hemi tick" is BS, nonexistent on the wk2. If all you care about is fuel buy the v6 but even then its not much of a different since I average 15-16 around town and 20-21 on the highway with my hemi this is computed and also matches what the EVIC says. Plus as was said before better to have and not need. . . ..

You will get different opinions all day on here, but the four factors you need to consider are:

The extra cost of a hemi
Fuel Economy if it matters
Power (towing ability, passing ability, power in reserve)
Reliability of a proven engine vs a new engine.

In the end after driving both most likely you will pick the hemi.
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Old 11-29-2010, 09:50 AM
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Re: V6 vs. V8

No matter what people say here, you'll get different opinions.

Get the V8 since you're going all out buying an Overland, it's useless to buy a V6 with a vehicle that weights around 5k lbs
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Old 11-29-2010, 09:51 AM
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Re: V6 vs. V8

The "Hemi Tick" JS referrs to is buyer's remorse over choosing the Pentastar.
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Old 11-29-2010, 09:58 AM
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Re: V6 vs. V8

Personal opinion only: I've had a V6 and V8 Grand Cherokee. Next one will be a V8. Always regretted getting a 6 on any car I ever owned.
If mileage is a major issue you need to rethink the whole SUV idea.
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Old 11-29-2010, 10:05 AM
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Re: V6 vs. V8

Before I bought, I tried both.

I bought the V-6. Here's why:

1) Extra power from the V-8 is not noticeable during normal driving. Given the throttle calibration for both engines (set more for efficiency than speed), the Hemi only gets you to 60mph one second faster, and it just didn't feel that much stronger.

2) Fuel efficiency. While we aren't talking a night and day difference, I have a hard time stomaching a vehicle that gets less than 20mpg highway if I'm not going to really enjoy the benefits.

3) Easier maintenance on the V-6. Have a look at the respective engine bays.

4) I didn't consider the benefits of the V-8 to be worth the $2000 extra.

5) The nearly unanimous opinion of the auto rags who compared the two powertrains was that if you weren't planning on towing, just get the V-6.

6) The 6 cylinder Pentastar/Mercedes W5A580 combo is incredibly smooth. It really does feel like a luxury vehicle.


I've put over 5500 miles on mine since I took delivery, including a trip through the Appalachains. I never once felt underpowered. If you lived WAY up in the Rockies (5K+ foot altitudes) or towed regularly, I'd say the Hemi would be worthwhile. If neither applies, the V-6 is certainly worth a look. This isn't the V-6 of some years ago; this thing generates darn near 300HP. That's more than many eight cylinder engines from not that long ago.

There's not so much difference between the two engines that it justifies any infighting or stupid remarks. It's just a matter of preference, and I never feel like I got stuck with a POS engine. I bought what I thought would be sufficient. I wasn't wrong.
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Old 11-29-2010, 10:13 AM
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Re: V6 vs. V8

The V6 felt great during the short test drive I had with it.
I went with the V8 since the mileage would be no worse than my previous '02 GC 4.7 V8. Despite that, the WK2 V8 doesn't feel as gutsy or powerful as my previous GC. It may be the gearing.
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Old 11-29-2010, 10:16 AM
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Re: V6 vs. V8

Quote:
Originally Posted by JoeSchmoe007 View Post
4) I am only at my second tank of gas but so far I am not getting anywhere close to advertised mileage during city driving - it is around 11-12 MPG

11-12 MPG on V6???? Something isnt right.
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Old 11-29-2010, 10:18 AM
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Re: V6 vs. V8

Quote:
Originally Posted by Red G8R View Post
The V6 felt great during the short test drive I had with it.
I went with the V8 since the mileage would be no worse than my previous '02 GC 4.7 V8. Despite that, the WK2 V8 doesn't feel as gutsy or powerful as my previous GC. It may be the gearing.


You need to reprogram your throttle. I have a 02 4.7 GC as well, and the 5.7 is FAR more powerful.

On my 02, if you lightly press on the pedal, it takes off, on my WK2, the first 1/4 of the pedal gives nice low speed control, but after that it's a rocket.

I suspect it's this difference in throttle sensitivity you're feeling, not to mention the fact that accelerating quickly in the WK2 isn't quite the "event" it is with the 2002, which gets really loud.
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