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[JamesV6CDX]

I'm looking out for a new Omega soon, unfortunately I just missed one on eBay,

As per title, I'm looking for thoughts on the differences between 2.5 and 3.0's. Eg fuel consumption, accelleration, top end speed, reliability differences, so on....

[Gwilym]

Autos are a lot slower, i believe as much as 1 second slower than a manual

Not much difference on Fuel Consumption

Vauxhall figures from 2000 sales catalogue based on manual saloon are:

2.5 V6 = Top speed 142mph, 0 - 60 8.5 secs, mpg combined 35.8
3.0 v6 = Top speed 151mph, 0 - 60 8.0 secs, mpg combined 35.8


I think you have a much better chance of finding a manual 2.5 though

[theolodian]

I think manual vs. Auto makes more difference.  The best of both worlds seems to be a 2.5 with 3.0 cams and maybe a chip.

[JamesV6CDX]

So you are saying that there is 10mpg difference between the 2? Surely not...

[Gwilym]

So you are saying that there is 10mpg difference between the 2? Surely not...

No, i mistyped. It is the same and I have now corrected it

[JamesV6CDX]

I think manual vs. Auto makes more difference.  The best of both worlds seems to be a 2.5 with 3.0 cams and maybe a chip.

OR - a 3.0 with 2.5 skimmed heads and 3.0 inlet cams

[Markjay]

Forget 3.0/3.2, the one to have is 2.5 or 2.6 (I had both 2.5 and 2.6). Much more refined and not much slower.  

[JamesV6CDX]

2.5 more refined than a 3.0? How so mate?

[Markjay]

2.5 more refined than a 3.0? How so mate?

I test drove two 3.0 Elites, the engine sounded and felt coarse compared to the 2.5. Now everyone here tells me I'm imagining things, but I know what I saw, so there...

[bob.dent]

If I could find a 3.0 or 3.2 MV6 Estate with a manual gearbox, I'd bite your legs off!! My 2.5 V6 is manual and flying through the gearbox close to the red line is awesome.  8-) 8-) 8-)

[Bo Bo]

I test drove a 2.5 auto before my 3.0 auto & there was a lot of difference, which I why I have my Elite.......

[omegaV6CD]

I would go for the bigger engine anytime with manual box. I'm not keen into comparing used cars as the maintenance of each car plays big role. You can get easily a 2.5 being faster than a 3lt and vice versa, again the driving style of each driver is important. I for example hate to use the engine at full load below 2500rpm eventhough you could accelerate without any problem with 5th and 700rpm.

[Admin]

Having owned both, I would always pick the 3.0 every single time. It is just so much better as an all round drive, mainly due to the significant extra torque.

However, the 3.0 is also noticably thirstier (well it is the way I tend to drive them!)

The manual box is wonderful, so, if you can find one, the manual MV6 is the way to go.

[Phil]

I currently own a 2.5 and a 3ltr, the 2.5 is a 2000 the 3ltr is a 99, both have done roughly the same millage and untill i fiddled with the 3ltr both were standard.

The second one i bought was the 3ltr kind of says it all.

Both are late engines so have the refinement tweaks that have been made over the years and in the actual 'smoothness' theres nothng in it.

To 60 theres not a horrendous amount in it, but from 50-70 and above the difference is more noticeable, and flat out its 3ltr all the way, it just keeps pulling.

The 3ltr is better to drive with a bit of agression, but then its the MV6 as opposed to a CDX so always will be.

Driven the same way theres very little difference in mpg, 1 or 2 miles at best, but with 2 or 3 passengers and a few bags the 3ltr feels more comfortable in the motorway speed up slow down situations.

To be honest you pay your money you take your choice but as the prices are almost the same a late 3ltr would be my choice over a late 2.5.

[Omega-MV6]

3 Ltr mate....

Anything Smaller is for Lawn Mowers!  

Take it from me the MV6 is quick, espcially in mid range pull at Motorway speeds....
Manual is better, but Auto box is still pretty good, you just have to "Plan" to overtake.

Cheers

Matt