2.5 vs 3.0

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Jun 10, 2008 | 09:29 PM

KSims1868

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2.5 vs 3.0

Obviously the 3.0 will be a more powerful engine.

Is either engine more reliable than the other? Is the 2.5 going to feel sluggish? Do they have the same transmissions?

Why would someone choose to buy the 2.5 over the 3.0 or vice versa?

Jun 10, 2008 | 10:09 PM

jvegas

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From: clevelnad

RE: 2.5 vs 3.0

i have had both the 2.5 and the 3.0. The 3.0 is the way to go! The tanny is the same in both and one is not more reliable then the other. The 3.0 feels proper. the 2.5 is sluggish compared to the 3.0. not to forget the extra 30-50 horse power (can't remember the tru number) If i had drove the 3.0 before I got the 2.5... I would have never got the 2.5...

Jun 11, 2008 | 05:15 PM

BuckMR2

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From: UK

RE: 2.5 vs 3.0

3.0 for me too.
Very similar fuel economies but liek jvegas said more power fromthe 3.0.
Similar insurance here in the UK too.

Jun 11, 2008 | 09:55 PM

Oldengineer

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Joined: Nov 2006

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From: WV

RE: 2.5 vs 3.0

I have owned both as well. The 2.5 makes 195 HP and the 3.0 has 227 HP. My 2.5 gave a max of 28 MPG highway, and, the 3.0 manages about 26. Obviously the 3.0 has much more suds, but, I liked the 2.5 as well. It never felt sluggish to me. I initially bought the 2.5 because, at the time, the 3.0 models were much more expensive - about $4K difference I believe.

Regards:
Oldengineer

Jun 12, 2008 | 01:28 AM

jvegas

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From: clevelnad

RE: 2.5 vs 3.0

but if you had a choice which one would you get?

Jun 12, 2008 | 10:20 AM

ken@britishparts.com

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Joined: May 2007

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From: Houston, Texas

RE: 2.5 vs 3.0

I don't get why build two engines so close in size? I can't imagine what that does to production costs. Just doesn't seem very wise to me.

Jun 12, 2008 | 12:59 PM

jvegas

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From: clevelnad

RE: 2.5 vs 3.0

i think the 2.5 was a new motor for Jaguar. The 3.0 is the same as the 3.0 in the S-Type.

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Jun 12, 2008 | 02:46 PM

Cadillac

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From: Planetarium

RE: 2.5 vs 3.0

The bigger the better

Jun 12, 2008 | 03:01 PM

jvegas

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From: clevelnad

RE: 2.5 vs 3.0

that's what she says! LOL

Jun 12, 2008 | 05:42 PM

#10

BuckMR2

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From: UK

RE: 2.5 vs 3.0

Quote:

ORIGINAL: jvegas

i think the 2.5 was a new motor for Jaguar. The 3.0 is the same as the 3.0 in the S-Type.

Which is derived from the Ford Mondeo V6 (same block,modified head and ECU).

Jun 12, 2008 | 08:21 PM

#11

jvegas

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From: clevelnad

RE: 2.5 vs 3.0

i thought they only shared the same pan???

Jun 12, 2008 | 08:22 PM

#12

jvegas

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From: clevelnad

RE: 2.5 vs 3.0

i think they share the same platform.

Jun 12, 2008 | 10:10 PM

#13

Oldengineer

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Joined: Nov 2006

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From: WV

RE: 2.5 vs 3.0

JVEGAS - Pretty obvious, that, when Jag reduced the price of the 3.0 I jumped on one. Also - I ain't buying into the 227 HP rating for the 3.0. I have a 3.5 Liter Saturn Aura that's rated at 219 HP, and, the Jag is a least a full second faster to 60 than it is - even though the Jag is probabaly several hundred pounds heavier.

Regards:
Oldengineer

Jun 12, 2008 | 11:34 PM

#14

jvegas

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From: clevelnad

RE: 2.5 vs 3.0

so you think the Jag has more then 227hp?

Jun 13, 2008 | 10:43 PM

#15

Oldengineer

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Joined: Nov 2006

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From: WV

RE: 2.5 vs 3.0

Jvegas - The night wife and I went to the unveiling event for the new Jag model, I approached a Jag factory guy and asked him directly about the HP rating on the 3.0 in the X. He admitted it's rating was "very conservative". I suspect there's very little actual difference between the X and the 236 HP version of the 3.0 in the S Type. In addition, I've seen several dyno tests results for the 3.0 X posted on various forums over the years that indicate the engine actually puts out about 240 HP. Wonder if anybody on this forum ever put one on a dyno??

Regards:
Oldengineer

Jun 13, 2008 | 11:21 PM

#16

KA3AX

Member

Joined: Jun 2008

Posts: 38

Likes: 0

RE: 2.5 vs 3.0

Yeah I just test drove a 2.5 manual the other day. Seemed VERY sluggish. I didn't get a chance to test drive a 3.0L but hope it is much better than the 2.5.
________
buy cheap vaporizer

Last edited by KA3AX; Jan 23, 2011 at 10:25 AM.

Jun 14, 2008 | 01:45 PM

#17

BuckMR2

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Joined: Oct 2006

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From: UK

RE: 2.5 vs 3.0

Quote:

ORIGINAL: Oldengineer

Jvegas - The night wife and I went to the unveiling event for the new Jag model, I approached a Jag factory guy and asked him directly about the HP rating on the 3.0 in the X. He admitted it's rating was "very conservative". I suspect there's very little actual difference between the X and the 236 HP version of the 3.0 in the S Type. In addition, I've seen several dyno tests results for the 3.0 X posted on various forums over the years that indicate the engine actually puts out about 240 HP. Wonder if anybody on this forum ever put one on a dyno??

Regards:
Oldengineer

Manufacturers tend to Err on the side of caution after someone successfully sued Ford when their Mustang didnt havethe claimed BHP it was quoted to have.It was a very expensive for Ford who had to do a recallI believe after losing.I dont know what they did to put them right or change things.
Re the X type:-
Mines on a dyno on Youtube:-
http://www.youtube.com/watch?v=tIUvZZnANlU#

Jun 14, 2008 | 09:37 PM

#18

ibjags

Joined: Jan 2008

Posts: 303

Likes: 2

From: Georgia

RE: 2.5 vs 3.0

[align=left]2.5 liter[/align][align=left]Gasoline[/align][align=left]2497 cmÂ³[/align][align=left](152 inÂ³)[/align][align=left]60Â° â€˜Veeâ€™[/align][align=left]6 Cylinder[/align][align=left]24 Valves[/align][align=left]244 Nm /[/align][align=left]180 lb ft[/align][align=left]at 3000 RPM[/align][align=left]194 BHP /[/align][align=left]145 kW / 197 PS[/align][align=left]at 6800 RPM[/align][align=left]241 Nm /[/align][align=left]178 lb ft[/align][align=left]at 3000 RPM[/align][align=left]192 BHP /[/align][align=left]143.5 kW / 196 PS[/align][align=left]at 6800 RPM[/align][align=left]10.30 : 1[/align][align=left]Â±[/align][align=left]0.35 : 1[/align][align=left]81.65 mm[/align][align=left](3.214 in)[/align][align=left]79.5 mm[/align][align=left](3.130 in)[/align][align=left]3.0 liter[/align][align=left]Gasoline[/align][align=left]2967 cmÂ³[/align][align=left](181 inÂ³)[/align][align=left]60Â° â€˜Veeâ€™[/align][align=left]6 Cylinder[/align][align=left]24 Valves[/align][align=left]284 Nm /[/align][align=left]210 lb ft[/align][align=left]at 3000 RPM[/align][align=left]231 BHP /[/align][align=left]172 kW / 234 PS[/align][align=left]at 6800 RPM[/align][align=left]279.3 Nm /[/align][align=left]206 lb ft[/align][align=left]at 3000 RPM[/align][align=left]227 BHP /[/align][align=left]169.4 kW / 231 PS[/align][align=left]at 6800 RPM[/align][align=left]10.5 : 1[/align][align=left]Â±[/align][align=left]0.5 : 1[/align][align=left]89.0 mm[/align][align=left](3.504 in)[/align][align=left]79.5 mm[/align](3.130 in)