What car has the best HPMPG?

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vi edit

Elite Member
Super Moderator
Oct 28, 1999
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It's really impossible to say what's best. It just comes down to driving habits and driving routines.

A 'vette *may be* capable of doing mid to high 20's once you drop it into that ultra high geared fuel sipper gear on the highway. But it's going to be a dog around town and getting you 15 if you are lucky.

 

overst33r

Diamond Member
Oct 3, 2004
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I think everybody should quote city or combined mpg numbers, that should even out the field a bit better
 

vi edit

Elite Member
Super Moderator
Oct 28, 1999
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Also, the higher the displacement, the worse your milage gets as you dig into the fun pedal. If you are flogging the crap out of a V8 you are going to get hit a lot harder on milage than you will in something like a little 2.0L found in a Civic.
 

woodie1

Diamond Member
Mar 7, 2000
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Originally posted by: KentState
Originally posted by: DonaldC
I think the Corvette uses premium fuel - if that's important to you.

The regular C6 recommends premium for max performance, but will run on regular. My old 6spd GTO, which is heavier, averaged 20 mpg in mix driving. On the freeway, it was easy to average 24 or so. If you do a lot of city driving though, the C6 would eat gas.

87 octane in a 'Vette. What is the world coming to?
 

fstime

Diamond Member
Jan 18, 2004
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Originally posted by: JulesMaximus
Originally posted by: Naustica
Originally posted by: Chiropteran
Originally posted by: andylawcc
Toyota 180hp 1.8L 2ZZ-GE that was found in the Celica GTS, Corolla XRS, and 1Matrix XRS. it returns 30mpg.

I'm not seeing it, is this engine retired or something? The new corolla only has a 1.8l economy engine, no upgrade option. The matrix has an upgraded 2.4l engine, but it's rated 21/28mpg... that is worse than what I am getting now with my 200HP VR6, I'm a little confused why it's so bad for such a weak engine.


The new Civic Si is 21/29mpg, for 190~HP, which is slightly better than what I have, but hardly justifies buying a new car.

Corvette's naturally aspirated LS7, 500hp, 20mpg

The "base" engine seems to be pretty efficient too. Maybe Corvette is the winner? I don't think it'd be suitable as a daily driver though :/

C6 Z06 with 505hp will get 26mpg hwy. Regular C6 with 436hp will get 28mpg hwy. ZR1 with 638hp will likely get around 24mpg. C6 is perfectly suitable as a daily driver. Car is very comfortable, has plenty of room, and pretty reliable. It's lot like a GT car.

That depends entirely on how you drive it. Here in CA I'd be suprised to see you get over 20mpg out of a Corvette in day to day driving. I'll ask my neighbor though, he had one for a couple years but got rid of it about a year ago.

Yup, no one even attempting to push the car will see those kind of numbers from a corvette.

Why would you buy a corvette to sissy drive it anyways, kind of defeats the purpose, you will get 25 mpg on the highway, if you keep it at 55, but like I said, who does that?
 

Chiropteran

Diamond Member
Nov 14, 2003
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Originally posted by: vi edit
Also, the higher the displacement, the worse your milage gets as you dig into the fun pedal. If you are flogging the crap out of a V8 you are going to get hit a lot harder on milage than you will in something like a little 2.0L found in a Civic.

But that doesn't seem to always be true.

For example:

6.2L Corvette EPA mileage 19mpg combined
1.3L Mazda RX8 EPA mileage 18mpg combined
 

vi edit

Elite Member
Super Moderator
Oct 28, 1999
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Originally posted by: Chiropteran
Originally posted by: vi edit
Also, the higher the displacement, the worse your milage gets as you dig into the fun pedal. If you are flogging the crap out of a V8 you are going to get hit a lot harder on milage than you will in something like a little 2.0L found in a Civic.

But that doesn't seem to always be true.

For example:

6.2L Corvette EPA mileage 19mpg combined
1.3L Mazda RX8 EPA mileage 18mpg combined

Again, those are ideal milages. Not "when having fun" milages.

You dig into all 400 horses and 6 liters of a Vette frequently and you aren't going to get 19MPG.
 

Demon-Xanth

Lifer
Feb 15, 2000
20,551
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Originally posted by: vi edit
Again, those are ideal milages. Not "when having fun" milages.

You dig into all 400 horses and 6 liters of a Vette frequently and you aren't going to get 19MPG.

And if you flog the little engine you won't get that mileage either. I have a coworker who had a CRX that he hotrodded up a bit (did high 13's in the quarter), he got worse gas mileage than my truck. To get power out it requires putting gas in. No way around that in the realm of internal combustion engines.

Do the people getting 60MPG in the Prius drive it fast? Nope. The people that drive them fast get 30's. If you take a slow driver in a Corvette and a fast driver in a Civic, it's easily conceivable that the Corvette would get MPGs, so you need to isolate the driver from the equation when comparing them.
 

SnipeMasterJ13

Golden Member
Oct 20, 2004
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Originally posted by: vi edit
It's really impossible to say what's best. It just comes down to driving habits and driving routines.

A 'vette *may be* capable of doing mid to high 20's once you drop it into that ultra high geared fuel sipper gear on the highway. But it's going to be a dog around town and getting you 15 if you are lucky.

Depends which Vette you are talking about. I have a C5 Z06. I drive "spirited" most of the time which involves mainly city driving. I only have a 4 mile stretch of highway on my 8 mile commute to work. The rest are back roads/stop signs/sharp corners. With that being my daily commute I still get 22mpg.

If I were to do a whole tank cruising in 6th gear I could easily get 28-32 mpg at 75mph. That is even with the slightly more aggressive gearing of the Z06. Of course this depends on the terrain. If you go through a lot of hills then yes, you are absolutely correct, the V8 will take a bigger hit compared to a smaller engine. But on a flat road in 6th(double over drive) a stock Vette gets amazing MPG for the amount of power it has. Automatics are obviously slightly less.
 

ayabe

Diamond Member
Aug 10, 2005
7,449
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Originally posted by: Chiropteran
Originally posted by: vi edit
Also, the higher the displacement, the worse your milage gets as you dig into the fun pedal. If you are flogging the crap out of a V8 you are going to get hit a lot harder on milage than you will in something like a little 2.0L found in a Civic.

But that doesn't seem to always be true.

For example:

6.2L Corvette EPA mileage 19mpg combined
1.3L Mazda RX8 EPA mileage 18mpg combined

Not a fair comparison really, rotaries are terrible in the MPG department.
 

Chiropteran

Diamond Member
Nov 14, 2003
9,811
110
106
Originally posted by: ayabe
Originally posted by: Chiropteran
Originally posted by: vi edit
Also, the higher the displacement, the worse your milage gets as you dig into the fun pedal. If you are flogging the crap out of a V8 you are going to get hit a lot harder on milage than you will in something like a little 2.0L found in a Civic.

But that doesn't seem to always be true.

For example:

6.2L Corvette EPA mileage 19mpg combined
1.3L Mazda RX8 EPA mileage 18mpg combined

Not a fair comparison really, rotaries are terrible in the MPG department.

Fine.
6.2L Corvette EPA mileage 19mpg combined
4L Explorer EPA mileage 15mpg combined
 

alimoalem

Diamond Member
Sep 22, 2005
4,025
0
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Originally posted by: Chiropteran
Originally posted by: ayabe
Originally posted by: Chiropteran
Originally posted by: vi edit
Also, the higher the displacement, the worse your milage gets as you dig into the fun pedal. If you are flogging the crap out of a V8 you are going to get hit a lot harder on milage than you will in something like a little 2.0L found in a Civic.

But that doesn't seem to always be true.

For example:

6.2L Corvette EPA mileage 19mpg combined
1.3L Mazda RX8 EPA mileage 18mpg combined

Not a fair comparison really, rotaries are terrible in the MPG department.

Fine.
6.2L Corvette EPA mileage 19mpg combined
4L Explorer EPA mileage 15mpg combined

Now you're comparing a 4400lb SUV to a 3200lb sports car. If you're going to make a comparison, at least compare things that are similar.

Maybe you should've done a Corvette Z06 vs a Ferrari F430

Corvette
sports coupe
7.0L V8
505HP/470 lb.-ft
3162lbs.
RWD
6-speed manual
15/18/24 MPG

F430
sports coupe
4.3L V8
510HP/470 lb.-ft
3196lbs.
RWD
6-speed manual
11/13/16 MPG


So yes, there are exceptions, but I think vi_edit's statement is generally true.
 

ponyo

Lifer
Feb 14, 2002
19,688
2,811
126
Originally posted by: BouZouki
Originally posted by: JulesMaximus
Originally posted by: Naustica
Originally posted by: Chiropteran
Originally posted by: andylawcc
Toyota 180hp 1.8L 2ZZ-GE that was found in the Celica GTS, Corolla XRS, and 1Matrix XRS. it returns 30mpg.

I'm not seeing it, is this engine retired or something? The new corolla only has a 1.8l economy engine, no upgrade option. The matrix has an upgraded 2.4l engine, but it's rated 21/28mpg... that is worse than what I am getting now with my 200HP VR6, I'm a little confused why it's so bad for such a weak engine.


The new Civic Si is 21/29mpg, for 190~HP, which is slightly better than what I have, but hardly justifies buying a new car.

Corvette's naturally aspirated LS7, 500hp, 20mpg

The "base" engine seems to be pretty efficient too. Maybe Corvette is the winner? I don't think it'd be suitable as a daily driver though :/

C6 Z06 with 505hp will get 26mpg hwy. Regular C6 with 436hp will get 28mpg hwy. ZR1 with 638hp will likely get around 24mpg. C6 is perfectly suitable as a daily driver. Car is very comfortable, has plenty of room, and pretty reliable. It's lot like a GT car.

That depends entirely on how you drive it. Here in CA I'd be suprised to see you get over 20mpg out of a Corvette in day to day driving. I'll ask my neighbor though, he had one for a couple years but got rid of it about a year ago.

Yup, no one even attempting to push the car will see those kind of numbers from a corvette.

Why would you buy a corvette to sissy drive it anyways, kind of defeats the purpose, you will get 25 mpg on the highway, if you keep it at 55, but like I said, who does that?

Why would you act like you know anything about the Corvette when you obviously have no experience with the car or read much about it? At what speed do you drive on the highway? 70mph? 80mph? You'll get 25mpg easily at 70-80mph speed and you'll be cruising at around 1500 rpm. You'll likely get 28-30mpg at 70-80mph. Highway driving is easy on the car. It's the city where people push it you'll see major difference in mpg.
 

kalrith

Diamond Member
Aug 22, 2005
6,628
7
81
Originally posted by: Chiropteran
Originally posted by: andylawcc
Toyota 180hp 1.8L 2ZZ-GE that was found in the Celica GTS, Corolla XRS, and 1Matrix XRS. it returns 30mpg.

I'm not seeing it, is this engine retired or something? The new corolla only has a 1.8l economy engine, no upgrade option. The matrix has an upgraded 2.4l engine, but it's rated 21/28mpg... that is worse than what I am getting now with my 200HP VR6, I'm a little confused why it's so bad for such a weak engine.


The new Civic Si is 21/29mpg, for 190~HP, which is slightly better than what I have, but hardly justifies buying a new car.

Corvette's naturally aspirated LS7, 500hp, 20mpg

The "base" engine seems to be pretty efficient too. Maybe Corvette is the winner? I don't think it'd be suitable as a daily driver though :/

It seems that the Civic SI gets much better gas mileage than what it's rated for. I noticed this in Consumer Reports real-life mpg numbers. The EPA numbers for the SI and regular manual version have a pretty big difference (21/29 and 26/34). However, in the Consumer Reports test I think they got 25 mpg (mixed city and hwy) from the SI and 27 from the regular manual version.

Also, my friend has an SI coupe and was just complaining that he's only get 29 mpg in the city when he was getting 32.
 

fstime

Diamond Member
Jan 18, 2004
4,382
5
81
Originally posted by: Naustica
Originally posted by: BouZouki
Originally posted by: JulesMaximus
Originally posted by: Naustica
Originally posted by: Chiropteran
Originally posted by: andylawcc
Toyota 180hp 1.8L 2ZZ-GE that was found in the Celica GTS, Corolla XRS, and 1Matrix XRS. it returns 30mpg.

I'm not seeing it, is this engine retired or something? The new corolla only has a 1.8l economy engine, no upgrade option. The matrix has an upgraded 2.4l engine, but it's rated 21/28mpg... that is worse than what I am getting now with my 200HP VR6, I'm a little confused why it's so bad for such a weak engine.


The new Civic Si is 21/29mpg, for 190~HP, which is slightly better than what I have, but hardly justifies buying a new car.

Corvette's naturally aspirated LS7, 500hp, 20mpg

The "base" engine seems to be pretty efficient too. Maybe Corvette is the winner? I don't think it'd be suitable as a daily driver though :/

C6 Z06 with 505hp will get 26mpg hwy. Regular C6 with 436hp will get 28mpg hwy. ZR1 with 638hp will likely get around 24mpg. C6 is perfectly suitable as a daily driver. Car is very comfortable, has plenty of room, and pretty reliable. It's lot like a GT car.

That depends entirely on how you drive it. Here in CA I'd be suprised to see you get over 20mpg out of a Corvette in day to day driving. I'll ask my neighbor though, he had one for a couple years but got rid of it about a year ago.

Yup, no one even attempting to push the car will see those kind of numbers from a corvette.

Why would you buy a corvette to sissy drive it anyways, kind of defeats the purpose, you will get 25 mpg on the highway, if you keep it at 55, but like I said, who does that?

Why would you act like you know anything about the Corvette when you obviously have no experience with the car or read much about it? At what speed do you drive on the highway? 70mph? 80mph? You'll get 25mpg easily at 70-80mph speed and you'll be cruising at around 1500 rpm. You'll likely get 28-30mpg at 70-80mph. Highway driving is easy on the car. It's the city where people push it you'll see major difference in mpg.

A buddy of mine owns one ;)

Trust me, people push their cars on the highway too, not only the city, especially in a Vette.

Like I said, its ALL about driving style; all I know is, I wouldn't have much self control in a Vette and neither would a lot of other people, but everyones different.

I don't care to "cruise" with a corvette, if I wanted to cruise I would get a nice comfy luxury car.
 

KentState

Diamond Member
Oct 19, 2001
8,397
393
126
Originally posted by: BouZouki
Originally posted by: Naustica
Originally posted by: BouZouki
Originally posted by: JulesMaximus
Originally posted by: Naustica
Originally posted by: Chiropteran
Originally posted by: andylawcc
Toyota 180hp 1.8L 2ZZ-GE that was found in the Celica GTS, Corolla XRS, and 1Matrix XRS. it returns 30mpg.

I'm not seeing it, is this engine retired or something? The new corolla only has a 1.8l economy engine, no upgrade option. The matrix has an upgraded 2.4l engine, but it's rated 21/28mpg... that is worse than what I am getting now with my 200HP VR6, I'm a little confused why it's so bad for such a weak engine.


The new Civic Si is 21/29mpg, for 190~HP, which is slightly better than what I have, but hardly justifies buying a new car.

Corvette's naturally aspirated LS7, 500hp, 20mpg

The "base" engine seems to be pretty efficient too. Maybe Corvette is the winner? I don't think it'd be suitable as a daily driver though :/

C6 Z06 with 505hp will get 26mpg hwy. Regular C6 with 436hp will get 28mpg hwy. ZR1 with 638hp will likely get around 24mpg. C6 is perfectly suitable as a daily driver. Car is very comfortable, has plenty of room, and pretty reliable. It's lot like a GT car.

That depends entirely on how you drive it. Here in CA I'd be suprised to see you get over 20mpg out of a Corvette in day to day driving. I'll ask my neighbor though, he had one for a couple years but got rid of it about a year ago.

Yup, no one even attempting to push the car will see those kind of numbers from a corvette.

Why would you buy a corvette to sissy drive it anyways, kind of defeats the purpose, you will get 25 mpg on the highway, if you keep it at 55, but like I said, who does that?

Why would you act like you know anything about the Corvette when you obviously have no experience with the car or read much about it? At what speed do you drive on the highway? 70mph? 80mph? You'll get 25mpg easily at 70-80mph speed and you'll be cruising at around 1500 rpm. You'll likely get 28-30mpg at 70-80mph. Highway driving is easy on the car. It's the city where people push it you'll see major difference in mpg.

A buddy of mine owns one ;)

Trust me, people push their cars on the highway too, not only the city, especially in a Vette.

Like I said, its ALL about driving style; all I know is, I wouldn't have much self control in a Vette and neither would a lot of other people, but everyones different.

I don't care to "cruise" with a corvette, if I wanted to cruise I would get a nice comfy luxury car.

I really don't know what you are talking. I pushed my GTO all the time and unless I was going 150mph on the freeway, I never had problems getting good mileage. The only thing that would drop the mileage would be city driving.
 

Chiropteran

Diamond Member
Nov 14, 2003
9,811
110
106
Originally posted by: KentState
Originally posted by: BouZouki
Trust me, people push their cars on the highway too, not only the city, especially in a Vette.

Like I said, its ALL about driving style; all I know is, I wouldn't have much self control in a Vette and neither would a lot of other people, but everyones different.

I don't care to "cruise" with a corvette, if I wanted to cruise I would get a nice comfy luxury car.

I really don't know what you are talking. I pushed my GTO all the time and unless I was going 150mph on the freeway, I never had problems getting good mileage. The only thing that would drop the mileage would be city driving.

Yeah I don't get it. It's pretty much impossible to screw up highway driving IMO, unless you are hitting your breaks without reason... which isn't "pushing the car", it's called "driving like an idiot".
 

Dman877

Platinum Member
Jan 15, 2004
2,707
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0
An E46 3-series with the 2.5 liter motor was pretty good (my dad had a 99 and it hit 31 mpg on 89 octane). They feel quick too because that motor has a good torque curve. My TSX gets 28 mixed but that's on premium and it really is no faster than my dad's 323 was.

My dad's got a 135i now and claims he's averaging 27 mpg around town. Yeah, he drives like an old man :)
 

jonesthewine

Senior member
Dec 30, 2003
689
0
76

The 2.0 liter K20Z3 engine in the current Civic Si makes 197 HP at 7800RPM and returns 32 - 36 mpg cruising on the highway between 65-75 MPH...there's not much that can touch it...and the sound that it makes from 5800RPM to 8200RPM is pure sex. VTEC FTW.
Originally posted by: andylawcc


Honda's 160hp K20, also returns >30ish mpg.



(all HWY mpg)

 

iamwiz82

Lifer
Jan 10, 2001
30,772
13
81
Originally posted by: jonesthewine

The 2.0 liter K20Z3 engine in the current Civic Si makes 197 HP at 7800RPM and returns 32 - 36 mpg cruising on the highway between 65-75 MPH...there's not much that can touch it...and the sound that it makes from 5800RPM to 8200RPM is pure sex. VTEC FTW.
Originally posted by: andylawcc


Honda's 160hp K20, also returns >30ish mpg.



(all HWY mpg)

My car makes 330 HP at 7900RPMand returned 26mpg this past weekend. I'll take mine over a Civic any day.
 

jonesthewine

Senior member
Dec 30, 2003
689
0
76
What do you have that revs that high?

Originally posted by: iamwiz82


My car makes 330 HP at 7900RPMand returned 26mpg this past weekend. I'll take mine over a Civic any day.

 

iamwiz82

Lifer
Jan 10, 2001
30,772
13
81
Originally posted by: DivideBYZero
S54 FTW! (343hp version :p )

I can get mine to do an easy 32 Mp Imperial g on the highway.

Stupid emissions :( We even get a second filter behind the air filter to stop emissions from leaking back out when off. If you pull it the ECU goes nuts . :|