With all the magazine articles, blog posts and friends of friends who think they know something about whats in store for the 2010 Mustang I thought why not make a list of all the rumors that are flying around. I think for the most part if you are web savy and read forums/blogs you know at this point the 2010 Mustang is being refreshed with some new body panels and interior work. Below I will list the rumors floating around that I have come across.

1. Let’s start with the rumor of a 400 horsepower 5.0L motor moving into the engine bay for 2010. In my opinion it’s unlikely we will see that big of a horsepower jump in a 5-year span. If you look back at the history of horsepower in Mustangs gone by you will see that HP ratings do not jump like most are predicting for the 2010 Model.

Look below for the horsepower by year list:

1986 - 200 hp
1987 - 225 hp
1993 - 225 hp/205 hp - ??
1994 - 215 hp
1996 - 215 hp
1999 - 260 hp
2005 - 300 hp
2010 - 400 hp predicted, More like 315-330 hp

I do see the 5.0L motor coming back but not for the standard Mustang GT. The 5.0L engine will be reserved for a Mach 1 or Boss Limited Edition type Mustang. Could we see the 5.0L motor down the line in a GT, very possible.

2. Another rumor about the 2010 Mustang has to be the refreshning of the body panels (hood, fenders, front and rear facias, etc..). To keep customers coming back something has to be changed and the simplest is the body panels. Not sure this is that much of a rumor, allthough to what extent will they change the body panels. We know from several spy photos the front end has signifigantly different lines and the front fascia, headlights and grille have been changed. So it’s just a matter of time till we see the real deal.

3. Interior being updated is another rumor which we can probably bank on happening. From spy photos of the interior you can see how the AC vents look to be rectangular in shape.

4. New headlight assemblies, this is definately a hot topic lately as a new spy shot came out showing a different look for the headlights.

5. This rumor seems like a long shot but sounds good, adding a twin-turbo Ecoboost V6 engine producing 415 horsepower as a motor option for the Mustang GT. Would get better gas mileage than the V8.

6. In the June 2008 issue of Car and Driver they seem to think Ford will offer a new 6.2-liter SOHC V-8 producing 400+ hp. I have not seen or heard of this anywhere else.

7. Will there be a 2010 Shelby GT, GT500 and GT500KR? Your answer is No, Yes, Yes. Shelby Autos has said there will be Shelby vehicles continuing through the next refresh. Allthough the only model not making the list is the Shelby GT which has been cancelled for 2009. I have a feeling poor sales on the Shelby GT did it in.

8.  Thats all I got so far