elcheapo

i havent seen any noticeable difference here in our area. we're at 40F in the early mornings and 55F high for the day. so far, my miles continue to be 19-20mpg, 50-65% city, 35-50% highway. granted, my rdx only has ~1k mileage so far.

cjbs

2007 RDX with CP-E CAI, Hondata, 20 inch MMR HR2, 245/45/20 Yoko Parada Spec-x, 33,xxx miles. All upkeep on time at dealership.
Inflate tires 4 PSI more in front and 2 PSI more in back.
Getting 20+mpg (no more than 22) on 70% urban, 10% city, 20% highway miles. Strictly highway miles, range from 20-23mpg.
*Gentle driving helps!!

Cladimere

Hey Guys, My RDX is getting 19mpg in HWY for some strange reason...The city mileage is 15mpg. BTW I hate the mileage meter! It's so hard to read!!!!!

elcheapo

new or old? if new, expect better mileage as miles go by... if old, maybe you're gunning it? hwy is hilly? still 19mpg not too far off the norm if old imho... am getting 22 mpg hwy if i dont gun it... getting 19-20 in suburban drives and 14-16 new york style city traffic

Gryfter

with my 09, I get about 17-18mpg city and around 23-24mpg highway and thats doing about 8-10 mph over the limit...

elcheapo

guys, just a question - have you compared your mileage via what the computer tells you vs manually computing how many gallons you fill up relative to your miles travelled? the computer tells me my rdx consumes 21mpg but i computed manually 22mpg... 5% difference - normal tolerance, i presume?

bg905

[QUOTE=elcheapo;11994559]guys, just a question - have you compared your mileage via what the computer tells you vs manually computing how many gallons you fill up relative to your miles travelled? the computer tells me my rdx consumes 21mpg but i computed manually 22mpg... 5% difference - normal tolerance, i presume?[/QUOTE

'Normal tolerance', depends? Can't say my computer has ever been 'on the money' when I compute fill-up/miles traveled.
My computer usually about 1mpg higher than my actual.

elcheapo

Thanks. at least i know others' have never been "on the money" either... personally, would prefer it to be on the money, of course, but 5% +/- for me is ok... good to hear. thanks for the data point...

GaDunk

Mine is averaging 20mpg mostly city and a little highway. But it will do not floor it very often.

stoxxsp500

22-23mpg during summers at 80-90% highway driving. 21 during winters same 80-90% hwy/city mix during that time frame. im not surprised with the fuel economy truth be told (relative to other cuv/suv) - in fact it beat my expectations.

pickler

im always average 11.3L/100km mixed city and highway.

mercury12

i average all city driving at 12-13 mpg avg speed 30mph with 15 min daily commutes. This is very low to my expectations of the stated 17 mpg city. i understand this is a sports compact suv and all but am very disappointed by what the actual mpg is vs the large difference in estimated mpg.

Redevil

This seems to be what I am getting on my 2011 as well. We all wish it was better but no such luck. Just had the first A1 Oil change service so, here is hoping that it will actually get better.

mav238

I think, you are probably 70% hwy and 30% city driving, to get the rather decent 11.3L/100km.

This SUV is not designed to be a fuel miser. If you do anything more than 50% city driving, you are bound to see like 12-15 L per 100 km.

Try driving mainly in the congested toronto streets, with no hwy driving, and you will be shocked to see your mileage shoot up to 13-15L per 100km.

From my 4 year experience driving this SUV, whenever I get ~ 11L per 100 km, it always include a significant portion of hwy driving.

TSXPlusRDX

This is abolutely true

Omnious

12-13 mpg is incredibly low even for all city driving. I commute 15 mins daily as well and my combined mpg is 21. Are you drag racing every stop light??

pickler

for all you non-believers i did 90% city today and averaged 10.3L/100km at average speed of 43 KM/H for distance of under 80km. This translates to 23.2 MPG for 26.2 MPH. ignore trip A that was spirited driving.



the secret is moderate acceleration to 40mph which is the most common city speed here and as soon as you hit 40mph take foot off gas engage cruise control. when you hitting uphills decelerate cruise control to avoid unnecessary acceleration. also when you are NOT using the cruise control if you just momentary take your foot off the gas and apply gas gently again i notice a dramatic fall in fuel consumption. Tire pressure is set to 42 PSI hot, how i set is i take it for a spirited ride and immediately correct pressure to 42. oh and i turn off engine at traffic jams and use 0% ethanol gas. i will post again after couple more hundred km.

jimmyR

FWW, my 2007 built in June 2006 now has 80,000 miles on it and I carefully average 22 - 23 in the city and 26- 27 on the highway. Using the turbo only when needed. On a full tank 100% highway non stop I have done 450 miles between fill ups holding 75 mph steady. I fill the tank to the top on the highway. A trouble free and delightful RDX!

pickler

ye it's pretty efficient on the highway for a 4000lbs car and 4 passengers. I averaged 26mpg yesterday. I have never gone below 18 mpg even when I push it hard and do spirited driving. it has same fuel consumption as my v6 TL in city but slightly worst in highway and this is acceptable considering my tl is nearly 800lbs lighter. I think k23 is a great engine they just need to work on fine tuning it for more linear turbo operation and improve the throttle response. it's too twitchy and I hate sometimes how the turbo starts spooling even tho I'm only feathering the throttle.

XIS

I am still around 17-18 with probably 80% city/20% HWY and accelerating with a goal to enjoy... 280 miles till the fuel light dings is very very common.

On my previous tank, I intentionally babied it with the goal to see how much higher I could possibly get the gas mileage... Tried everything I could to not engage the turbo... probably drove the hwy a bit more too... With all that babying and coasting, I got 320 miles before the light went on... about 19.5 mpg.

I would rather floor it!

pickler

hmm i don't know its not just about babying it. its all about the throttle as soon as you accelerate to desired speed take your foot off throttle and engage cruise control and slow down the CC a couple times on hill climbing. the throttle is too sharp and its not tuned for economy. i did some spirited driving and idling and still got 25.5mpg. i personally dont need to floor my rdx gives me great power already at 4500rpm so i did several midrange power passings without any penalty on my fuel economy.

btw i forgot to attach pic, 25.6 mpg:

eilros

We've had our 2007 Tech for exactly one year and have averaged 17.57 mpg. We put on 5568 miles, 45% hwy/55% city.

alejandro101

Ive put 190 miles on it since I bought it and used a little more than half of the tank. Im at around 20 mpg, give or take a little. So far its been 70% city, 30% highway if I had to guess.

It should improve once its broken in, and my drive to work will be 50 mph with few traffic lights so it shouldnt be too much of a guzzler.

stray_pube

trip from MA to NJ, mostly highway, crusie on 70, plenty of turbo along the way. (tried to post images but got red x) 211 miles, 27.9 MPG.

http://s244.photobucket.com/albums/g...-38-21_828.jpg

Trip B reading since last oil change. Anticipate being at 5% just over 7k

http://s244.photobucket.com/albums/g...-38-36_110.jpg

LC2ner

Got about 24.5 MPG on a 316 mile trip from VA to NC on I-81 (re: 75-80 MPH)

nvbft90

got my 08 tech 2 weeks ago. on the first tank, the first 150 miles i put on it was at 12.3 mpg since i was excited about my purchase and wanted to play with the turbo every other second. the avg mpg was at 21.7 when i filled up cuz after those 150 miles of hard driving, i finished the tank by driving only using sport mode paddle shifters, upshifting whenever i could. the turbo meter needle barely rose past 1/3 the few times it did move. saved a crap ton of gas haha. gonna continue playing around with different driving styles to see what happens to my mpg

corduroygt

Went from BWI airport to rehoboth beach, DE and back. 197 miles, half the road is two-way traffic where I overtook some slower cars a few times, some traffic jams but none lasting more than 5 minutes, usually went 10 over the limit whenever I wasn't stuck behind traffic.

I got 25.1 mpg, also was able to buy 93 octane at $3.75/gal.
My car has 19k miles and I run my tires at 36-38 psi.

Mr Marco

:thumbsdow




18-19mpg city, 20-22mpg hwy, Avg. lifetime 17.65mpg (early abuse)

mav238

Why are people still beating this thread to death? Are you not convinced that the RDX is not the most frugal or thrifty in gas consumption? Most other cars have the latest in fuel delivery systems, like direct gasoline injection, more efficient turbos etc... but the RDX turbo engine is still a good reliable smooth revving high performance engine driving the heavy RDX body.

It is like looking at an "ugly" person and say " Boy, you are ugly, why is it like that???"... Well he/she is ugly, you knew it, then deal with it or walk away from it altogether... rather than trying to get opinions as to whether people also think he/she is ugly, or agree with you that he/she is ugly, and can we make he/she look less ugly...

Mr Marco

Good analogy^. The issue for me is that Acura touted the 4cyl turbo as having the horsepower of a V-6 with the fuel economy of a 4cyl. In fact the RDX mileage numbers are on par (or worse than) a 3ltr V6 BMW X3.

XLR8R

Your commute is too short to get the car up to full operating temperature, where the ECU will trim fuel and obtain better economy.

JCRDX11

I am getting only 13 mpg and that is highway miles. RDX is worse than my ML55 and that is V8.

Mr Marco

^Holy Gas Hog Batman!! Are you sure the neighbor kid didn't shove a potato in your exhaust?? That is awful.
If it's not mechanical that is some serious lead footing.

JCRDX11

Heavy foot due to the Hondata Benefits! =P

jasonwdp10

Should we all just stop discussing anything then? Might as well close the entire internet if everything has already been discussed and there's no point talking anymore right??

What's even more surprising is that people are still getting all defensive about the RDX when someone posts horrible gas mileage. "You're driving it wrong"
unfortunately not everyone drives the same way. Its not like he'll suddenly live further from work to get better gas mileage. He'll be seeing the same kind of mileage throughout the life of the vehicle.

Indeed, when comparing my cousins 07 RDX to my 2010 TL SHAWD. He his avg gas mileage was 12.5-13mpg.. including numerous trips from norcal to socal and back, vs my TL SHAWD's 14.5mpg doing mostly city/local/suburb driving. Yes, the TL SHAWD is also faster, and about the same weight.

There's aerodynamics/drag involved, but I seriously doubt that is the sole reason that the FE is that bad on the RDX.

mav238

Sure you can discuss it, but the funny thing about it is, you all discuss it like the not so great mileage of the RDX is really surprising. It has been and had been discussed till the cows go to sleep, the RDX turbo I4 engine is not the thriftiest; it could be due to a myriad of reasons, chassis, AWD drivetrain etc... So you can continue to discuss it, and the same I4 turbo engine will still be the same thirsty engine... Unless we are Acura/Honda's R&D team on this forum, banging ideas around as to how to modify the engine to make it be more efficient, then this kind of discussion is meaningless after a while. Beating the thread to death is not goijng to help get the frustration out of some of us who is fed up with the poor gas mileage of the RDX. If it bothers you that much, and you can afford the money, change the vehicle to say an Audi Q5 or even the Hyundai Santa Fe, they all have much better fuel economy engines. The current technology is the gasoline direct injection engines, which RDX does not have. Even the Audi's use the FSI (fuel stratified injection) which helps a great deal in fuel economy.

So simply change the RDX over to a more current vehicle with the more efficient engine design and your dissatisfaction will go away.......

pickler

scored 9L/100km for ~1000km this long weekend. impresive for a 4500lbs (full-load) and 240hp suv. 80% highway.

ps. 9 l/100km = 26.1 miles per gallon

MMike1981

not by any means what would be the greatest or even biggest benefit to the RDX engine. Look at the Mazda CX-7. I avg'd 13 or less in that one, too. Its called 6 gears, better lighter metals, use of aluminum, engineering, all those things that combine to make a better driving car by the sum of all its parts. What helped the new MDX eek out 1-2 more MPGs? sure was NOT direct injection because Acura does not use it.. The RDX will/would benefit from many things...but Acura decided to let a vehicle introduced in 2006 sit and rot basically for its entire shelf life. There has been no R&D pumped into it other than a few revisiosn w/the engine/AC fan (from a 2 stage to 1 stage for loudness issues) and supposedly a beefed up braking system. Other than that, its essentially exactly the same mechanically and possibly worse depending on how you view the terrible asthetic revisions lol. So in the end, i guess people are still talking about MPG's because at least BY NOW, there should have been something from Acura to squeeze out better performance, even if it were through an ECU update, or shockingly they put in 6 speeds to the current model. Im of the opinion that i could care less what the RDX gets for MPGs, but in todays car market, it really REALLY blows and is smashed by the competition that produces more power with more engine. I avg around 16 MPG to a tank usually. And i must say, also recently, the RDX does make you think twice about running random errands. the thought has crepped into my head a few times, that needle moves so quick especially in stop/go driving its almost funny.

on the one hand people are bitching about it, on the other, those same people should have already known about it. dead issue. Live issue is how come nothing has been done about it. Acura doesnt care, obviously. Like many have said over the years this thread has been posted, either you bought the wrong car, or sell it and get something else. that is the solution given the options (or lack thereof). Hopefully, a "new" RDX solves all of this.

tpf1979

have a 2011 front drive, 5700 miles on the odo. Most of my driving is about half city, half highway. I am averaging 21-22mpg. Not bad for a thirsty turbo 4cyl in a heavy car..BUT- I have front wheel drive, always run 93 octane, and use various tricks to increase mileage- IE- when going up hills on a highway- I wont give it too much juice, and use the downhill to regain momentum. I put it in neutral A LOT- when coasting to a red light, or down a hill, and when stopped at a light. When its safe to do so, I drive as if the car has no brakes- making use of its momentum as much as possible. Other than the occasional throttle blast to merge onto the highway, I take it easy with the throttle and am mindful of my MPG (always have the meter on display!). I am honestly thinking it may be something that warrants attention from the dealer.. I think I should be getting at least 25 with the way I drive. Or am I beating a dead horse here, and just be happy with the 21mpg?

pickler

do NOT put in neutral when cruising. first it will raise RPM and second it will deactive fuel cutoff control. When you are going downhill at say 45-60mph and you take foot off throttle, the engine fuel injectors will shutoff. In neutral it will still inject about 0.8L per hour. I found out about this by using scangauge 2 computer. you can buy it and install it easy, its smaller than a gps even. I use it to hpermile and i'm currently getting about 25 mpg combined. check above for pics. 21 mpg combined is healthy number for fwd rdx. you can get 23mpg easy though and should not expect more.

hypermiling:
- avoid idling, turn engine off at long stops and lights
- pulse and glide. research this.
- avoid spooling turbo
- if travelling for over 300 meters with no stops or redlights accelerate moderatly and get to speed
- if travelling for less than 300 meters with stops/lights accelerate slowly
- anticipate redlights and stops, take foot off gas
- adjust tire psi to 35psi
- use 5w-20 synthetic oil
- avoid cruise control specially during uphill driving (pulse and glide better)
- drive at posted speed limits, they are usually the most efficient
- Drafting (risky) drive behind trucks and trailers. this reduce aerodynamic drag, wind noise and improves MPG
- watch for lights about to turn yellow/red, anticipate stop and let go of throttle

follow theses at your own risks.