2g RL gas mileage
#3
been many threads on this
I get 19 combined with commute being about half freeway half city
I've never gotten above 25 on trips with 70+ driving
my instant reads about 25 at 70mph and goes down as I speed up to about 20mpg at 80mph
I get 19 combined with commute being about half freeway half city
I've never gotten above 25 on trips with 70+ driving
my instant reads about 25 at 70mph and goes down as I speed up to about 20mpg at 80mph
#4
The RL can get very impressive mileage. Keep in mind it is a heavy AWD sedan and will show it's weight in city driving and heavy foot driving. But with some finesse, you can get decent mileage.
In pure city driving I get 18mpg.
Mixed 50/50 driving I get 23-23.5mpg.
Pure highway, for the full tank with cruise on 70 mph I got 29mpg.
I notice an avg 1mpg improvement in summer (with AC always on). I assume that is due to summer fuel grades. Or maybe in winter with AC off and windows down is a drop of 1mpg due to drag? Moot.
Keep in mind 09 RLs have the 3.7L engine, more torque a little more HP and slightly lower mpg.
Fuel wise I have found the best mileage with Shell and BP (most expensive in my market) and worst with Hess (cheapest in my market). I only use 93 Premium (no 91 in my area). I believe all now have up to 10% ethanol.
Of course local gas mixtures, climate, and even road surfaces can vary mileage even if all RLs were equipped, weighted and driven exactly the same.
YMMV.
In pure city driving I get 18mpg.
Mixed 50/50 driving I get 23-23.5mpg.
Pure highway, for the full tank with cruise on 70 mph I got 29mpg.
I notice an avg 1mpg improvement in summer (with AC always on). I assume that is due to summer fuel grades. Or maybe in winter with AC off and windows down is a drop of 1mpg due to drag? Moot.
Keep in mind 09 RLs have the 3.7L engine, more torque a little more HP and slightly lower mpg.
Fuel wise I have found the best mileage with Shell and BP (most expensive in my market) and worst with Hess (cheapest in my market). I only use 93 Premium (no 91 in my area). I believe all now have up to 10% ethanol.
Of course local gas mixtures, climate, and even road surfaces can vary mileage even if all RLs were equipped, weighted and driven exactly the same.
YMMV.
Last edited by TampaRLX-SH; 11-06-2009 at 02:16 PM.
#6
Remarkably consistent 18 - 19 around town and almost always right at 28 for pure highway driving although I did hit 30 for an extended time (probablyhad a tailwind) a few months ago. Never got 31 for other than short periods though.
LL
LL
#7
Since I have not found 91 at my local stations, I only use 93. My cross state trip which yielded 29mpg was run on my OEM Michelins at 36PSI front and 34 PSI rear.
I would suspect most of the difference might have been the sum of tires, tire pressure, road surfaces, humidity, and cargo weight. Unless a side by side controlled comparison could be made, it is not unrealistic to have such variances.
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#8
Many, many, many threads on this.
I had 16-17 mpg in city/mixed driving but I liked the loud pedal because of my exhaust. On pure freeway trips, I had 24-26 mpg. I was reasonably satisfied with the mileage.
I had 16-17 mpg in city/mixed driving but I liked the loud pedal because of my exhaust. On pure freeway trips, I had 24-26 mpg. I was reasonably satisfied with the mileage.
#9
Perhaps 13mpg on the CTS-V is diluting the torque thrill as premium gas is again vaulting $3 / gallon?
#15
And I'm getting 15 mpg now that the engine is broken in at 7k miles.
The V's biggest gas problem is not mileage, it's the itty bitty gas tank. It needs another gallon, STAT! It has 18 gallons, while the RL has 19.4 gallons. As a consequence, I have to refill after 240-250 miles. Then again, the V is not a car you buy for gas efficiency, LOL!
Last edited by neuronbob; 11-07-2009 at 08:50 AM.
#16
LOL! You are a bad, bad, bad man.
And I'm getting 15 mpg now that the engine is broken in at 7k miles.
The V's biggest gas problem is not mileage, it's the itty bitty gas tank. It needs another gallon, STAT! It has 18 gallons, while the RL has 19.4 gallons. As a consequence, I have to refill after 240-250 miles. Then again, the V is not a car you buy for gas efficiency, LOL!
And I'm getting 15 mpg now that the engine is broken in at 7k miles.
The V's biggest gas problem is not mileage, it's the itty bitty gas tank. It needs another gallon, STAT! It has 18 gallons, while the RL has 19.4 gallons. As a consequence, I have to refill after 240-250 miles. Then again, the V is not a car you buy for gas efficiency, LOL!
But that itty bitty gas tank is part of the CTS-V 'efficiency' strategy. A larger fuel tank means more weight...less efficiency. And by burning off fuel faster, it gets lighter....making it more fuel efficient!
#20
I cannot wait to see the repercussions from you if / when I move to another brand.....
But that itty bitty gas tank is part of the CTS-V 'efficiency' strategy. A larger fuel tank means more weight...less efficiency. And by burning off fuel faster, it gets lighter....making it more fuel efficient!
But that itty bitty gas tank is part of the CTS-V 'efficiency' strategy. A larger fuel tank means more weight...less efficiency. And by burning off fuel faster, it gets lighter....making it more fuel efficient!
Kudos to you guys getting 20+ mph in mixed hwy/city driving, I was never able to pull that off in my RL.
#21
#23
My mileage averages are down, and I think it's the "winter gas" we get. Anyway, I'm getting 19.1-19.6 mpg on the tank, and I fill up when the idiot light tells me to. On the freeway, locked in at 70mph, I typically average 30mpg; at 80mph it's 24mpg -- both on the flats.
#24
My mileage averages are down, and I think it's the "winter gas" we get. Anyway, I'm getting 19.1-19.6 mpg on the tank, and I fill up when the idiot light tells me to. On the freeway, locked in at 70mph, I typically average 30mpg; at 80mph it's 24mpg -- both on the flats.
#25
My MPG averages went down too. I do not want to blame it on my new 18" wheels/tires combo (the new set is only ONE pound heavier than stock), yet i do not really know what else could be the reason. I hope, i really hope it is the 'winter' gas.
ON my stock 17" wheels/tires....i was getting 20-22MPG around town ALL the time without molesting the gas pedal. On the freeeway, i was easily getting 25-26MPG with speeds 70-85mph (no cruise control). I went all the way to 28-29mpg a few times.
With my new 18" wheel/tire set ... i have them on the car for 2 months now.
Around town - 18-19MPG at best.
Freeway - 20-23MPG at best. (no cruise control).
With cruise control (@70mph)...i can get 25mpg or a bit better.
Ideas?
ON my stock 17" wheels/tires....i was getting 20-22MPG around town ALL the time without molesting the gas pedal. On the freeeway, i was easily getting 25-26MPG with speeds 70-85mph (no cruise control). I went all the way to 28-29mpg a few times.
With my new 18" wheel/tire set ... i have them on the car for 2 months now.
Around town - 18-19MPG at best.
Freeway - 20-23MPG at best. (no cruise control).
With cruise control (@70mph)...i can get 25mpg or a bit better.
Ideas?
#27
I did replace the stock MXM4's with better, more performance oriented tires - Continental ContiExtreme DWS. I am not an expert on tires and rolling resistance force but i did not expect a more aggressive tire to cause such drop in MPG (2MPG +).
#28
Performance tires are made for better grip. Softer rubber compounds make them 'stickier' and as a result create greater friction. Further, they tend to wear faster.
The OEM MXM4s are have harder compounds and tend to be louder, and perform less (as far a grip) but Honda favors these Michelins due to typically longer wear (for modest drivers) and less rolling resistance, producing better mileage / efficiency.
Finding the right balance may differ from what the manufacturer is targeting and what individual drivers favor.
The OEM MXM4s are have harder compounds and tend to be louder, and perform less (as far a grip) but Honda favors these Michelins due to typically longer wear (for modest drivers) and less rolling resistance, producing better mileage / efficiency.
Finding the right balance may differ from what the manufacturer is targeting and what individual drivers favor.
#29
With tire pressure at 33 front and 31 rear I get around 20-22 mpg with 50/50 city/highway driving during the summer. The mileage drops during the winter by about a mile/gallon. On a recent long trip to NC I got about 27 mpg pure highway driving.
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