Performance between Coupe vs Sedan...
Senior Member
Joined: 03-09-09
Posts: 582
Likes: 0
From: Manassas, VA
My car is the same way ..... But I don't have a sunroof so I think that helps the squeek and noise situation.
Senior Member
Joined: 03-14-09
Posts: 1,039
Likes: 0
From: Anna, TX
wingless coupe has the best drag coef. But thats such a marginal change, its not really something that should even be quantified, so idk why that poster brought it up
Senior Member
Joined: 05-07-09
Posts: 1,656
Likes: 4
From: Collingwood, Ont
No RPD in sedans? No thanks. My previous car I did 3 gauges(oil/volt/boost) was happy, but when useing the RPD on my new cobalt its pure bliss. EVERY gauge an average driver could need and more.
Plus when people are looking in my car I can tell they are curious because it doesn't look like a gps or sat radio.
Sorry to all you non RPD'ers. You don't know what you're missing.
Plus when people are looking in my car I can tell they are curious because it doesn't look like a gps or sat radio.
Sorry to all you non RPD'ers. You don't know what you're missing.
Senior Member
Joined: 03-14-09
Posts: 1,039
Likes: 0
From: Anna, TX
No RPD in sedans? No thanks. My previous car I did 3 gauges(oil/volt/boost) was happy, but when useing the RPD on my new cobalt its pure bliss. EVERY gauge an average driver could need and more.
Plus when people are looking in my car I can tell they are curious because it doesn't look like a gps or sat radio.
Sorry to all you non RPD'ers. You don't know what you're missing.
Plus when people are looking in my car I can tell they are curious because it doesn't look like a gps or sat radio.
Sorry to all you non RPD'ers. You don't know what you're missing.
Junior Member
Joined: 05-29-09
Posts: 458
Likes: 1
From: Houston Texas
I know what you ARE missing w/ the RPD ...
No RPD in sedans? No thanks. My previous car I did 3 gauges(oil/volt/boost) was happy, but when useing the RPD on my new cobalt its pure bliss. EVERY gauge an average driver could need and more.
Plus when people are looking in my car I can tell they are curious because it doesn't look like a gps or sat radio.
Sorry to all you non RPD'ers. You don't know what you're missing.
Plus when people are looking in my car I can tell they are curious because it doesn't look like a gps or sat radio.
Sorry to all you non RPD'ers. You don't know what you're missing.
What I wish the sedan had that the coupes do is the lumbar adjustment. Same seats - what the hell ?
Other than that - no complaints. Unless the window motors go south, 'cuz then I have 2 more to deal w/.
Britt
Senior Member
Joined: 05-07-09
Posts: 1,656
Likes: 4
From: Collingwood, Ont
You make some good points TorqueSSter. I forgot that it doesn't show vacuum. And windows motors are quite costly, I know cause i got a quote for 400$ CAD to fix 1 on my 02 sunfire.
And the diff in driving between the two will be very minimal. Which is a good selling point for the sedan.
And the diff in driving between the two will be very minimal. Which is a good selling point for the sedan.
Interceptor completely fixes and by passes that no RPD problem, lol. I get to look at more parameters than you guys with the RPD could ever possibly imagine 
Not to mention, they dont make a dual gauge setup for someone with an RPD.
Not to mention, they dont make a dual gauge setup for someone with an RPD.
New Member
Joined: 06-23-09
Posts: 59
Likes: 0
From: Woodbridge, VA
Coupe
2008 Chevrolet Cobalt SS - Short Take Road Test - Auto Reviews - Car and Driver
Sedan
2009 Chevrolet Cobalt SS Sedan - Short Take Road Test - Auto Reviews - Car and Driver
Now I can't find anywhere that states which skid pad size is the tougher one so I might be wrong on the handling part, but my guess would be the 300ft one cause you are going a lot faster on it.
I didn't say this pulling it out of my ass. There is proof.
Coupe
2008 Chevrolet Cobalt SS - Short Take Road Test - Auto Reviews - Car and Driver
Sedan
2009 Chevrolet Cobalt SS Sedan - Short Take Road Test - Auto Reviews - Car and Driver
Now I can't find anywhere that states which skid pad size is the tougher one so I might be wrong on the handling part, but my guess would be the 300ft one cause you are going a lot faster on it.
Coupe
2008 Chevrolet Cobalt SS - Short Take Road Test - Auto Reviews - Car and Driver
Sedan
2009 Chevrolet Cobalt SS Sedan - Short Take Road Test - Auto Reviews - Car and Driver
Now I can't find anywhere that states which skid pad size is the tougher one so I might be wrong on the handling part, but my guess would be the 300ft one cause you are going a lot faster on it.
New Member
Joined: 06-23-09
Posts: 59
Likes: 0
From: Woodbridge, VA
Yes sedan tops out higher but the coupe gets there quicker, by 2 sec to 130. Of course, you can also remove the wall of a spoiler and it will top out like the sedan if not higher.
Last edited by sebbie16; Feb 10, 2011 at 02:36 PM.
Senior Member
Joined: 08-19-09
Posts: 7,665
Likes: 7
From: Windsor NS
ya there are way too many variables ... not every test drive of a car is the same... just because you are comparing the numbers car and driver supplied doesn't mean it was done with the same driver on the same day in the same weather... the difference between the sedan and coupe in performance would be almost unmeasurable. 50 lbs won't make that much of a difference... and there is no way a sedan is aerodynamically different enough to beat the coupes top end by .. 10mph. these numbers are fudged by the editors as bad as they are by those salesmen who don't even take the time to read the sales brochure and sell these things claiming they are still supercharged LOL
Looking at those numbers ..... the Coupe is 40 LBS lighter than the sedan ..... but when you add in the downforce from the coupes park bench at high speed (23lbs @70mph and 115lbs @155 ) the coupe actually starts to weigh more on top end then the sedan lol.
Another thing you have to consider is the sedan came a bit after the coupe .... and the article dates show that .... the coupe looks like it was tested in july .... so summer weather VS November for the sedan . We all know how much better these cars run when the weather starts to cool off, it's a big difference.
I know I shouldn't even bother trying to explain how or why the tests are different because there are just too many things that could be different and people are going to see the numbers they want to see no matter if there is a reason behind them or not ....... but I really don't think there is much of a difference between them no matter what a magazine says. lol
Another thing you have to consider is the sedan came a bit after the coupe .... and the article dates show that .... the coupe looks like it was tested in july .... so summer weather VS November for the sedan . We all know how much better these cars run when the weather starts to cool off, it's a big difference.
I know I shouldn't even bother trying to explain how or why the tests are different because there are just too many things that could be different and people are going to see the numbers they want to see no matter if there is a reason behind them or not ....... but I really don't think there is much of a difference between them no matter what a magazine says. lol
ya there are way too many variables ... not every test drive of a car is the same... just because you are comparing the numbers car and driver supplied doesn't mean it was done with the same driver on the same day in the same weather... the difference between the sedan and coupe in performance would be almost unmeasurable. 50 lbs won't make that much of a difference... and there is no way a sedan is aerodynamically different enough to beat the coupes top end by .. 10mph. these numbers are fudged by the editors as bad as they are by those salesmen who don't even take the time to read the sales brochure and sell these things claiming they are still supercharged LOL
Looking at those numbers ..... the Coupe is 40 LBS lighter than the sedan ..... but when you add in the downforce from the coupes park bench at high speed (23lbs @70mph and 115lbs @155 ) the coupe actually starts to weigh more on top end then the sedan lol.
Another thing you have to consider is the sedan came a bit after the coupe .... and the article dates show that .... the coupe looks like it was tested in july .... so summer weather VS November for the sedan . We all know how much better these cars run when the weather starts to cool off, it's a big difference.
I know I shouldn't even bother trying to explain how or why the tests are different because there are just too many things that could be different and people are going to see the numbers they want to see no matter if there is a reason behind them or not ....... but I really don't think there is much of a difference between them no matter what a magazine says. lol
Another thing you have to consider is the sedan came a bit after the coupe .... and the article dates show that .... the coupe looks like it was tested in july .... so summer weather VS November for the sedan . We all know how much better these cars run when the weather starts to cool off, it's a big difference.
I know I shouldn't even bother trying to explain how or why the tests are different because there are just too many things that could be different and people are going to see the numbers they want to see no matter if there is a reason behind them or not ....... but I really don't think there is much of a difference between them no matter what a magazine says. lol
The thing is, if you have to explain variables to someone, then you're 100% right rukkee. People are only going to see what they want to see.
