question regarding scale

It would kinda be noticeable.  In real life the new 2010 Camaro is 2.8 inches longer than the newest Mustang, so if you had:

1/24 Mustang - 7.8 inches long

1/25 Camaro -  7.6 inches long. 

So yeah, while the real Camaro would be slightly longer, the models would be the opposite. But then again its only .2 inches, and you'd have to have a really good eye to notice.  If you see the two you want and they're diff scales, I'd still go for it unless it was somthing odd scale like 1/20 haha.  

And even then, it also comes down to how you pose them together, because I don't really think that 0.2 inches will really be noticable unless you put them super close together like side against side.  Just pull out a ruler and see how small 2/10ths of an inch is.  

As far as the difference.. dunno, but I wish they would just make ONE.  Because it seems to cause a lot of problems, whether it be causing questions like this or even decals.  I swear some of these 1/25 Nascars I've put together have decals for 1/25.. because even though its only like 0.1~0.2 inches different, it leaves so much overhang and its just wrong.. 

All model makers seem to do it though.  Outta my collection of cars I have slightly more 1/25 than 1/24 but not that many and I have cars from just about everyone.  The only one that seems pretty faithful to one is Tamiya, and they seem to do almost all 1/24, at least all the Tamiya cars I have are.

Revell has both scales mostly from when they merged with Monogram many moons ago. Revel was 1/25 and Monogram was 1/24. If you see a kit on the shelf from Revell in 1/24, it has a 99.44 percent chance that it is an original Monogram re-released, sometimes with new goodies, such as new wheels and decals, sometimes classic plastic as originally released by Monogram before the merger.

I for one am glad Revell values it's treasure of Monogram toolings and die sets in all forms of our hobby, auto, aircraft, and ships.

Thanks for the answers guys!

I didn't even think about the Revell/Monogram merger. That makes sense about having two different scales.

Yeah, Revell has been very good about keeping those Monogram molds in circulation.

I've mixed 1/24 figures with a 1/25 auto, the figures are a little tall but they look alright next to the car. People are different heights and... I mean as has been said, size is relative to perspective so it can be mixed and matched to the untrained eye.

Cool info on the merger, makes sense to me.