Various 2011 g37x Questions

[jdag]

I just purchased a 2011 g37x and have a few questions. My car has both the premium and navigation packages.

1) What gas mileage should I expect? Currently, after only ~650 miles and a couple of tanks of gas (93 octane), I am only showing ~15.7 mpg. This is well below expectations. My driving is fairly well divided between city and highway.

2) Is there a tire pressure display anywhere? I know the car has TPMS sensors, but is there anyplace to find the actual tire pressure readings? I have a 2010 FX35, a 1999 Corvette, and had an 2008 Acura TL and all have such capabilities to instantly see pressure.

3) I have a heck of a time closing the trunk. Often, it just won't latch and I have to try to close it several times. I am going to report this when I make my 1st service visit. But I was wondering if there is some "trick" to closing it (ie - is there some security feature that I am not properly handling)?

Thanks, John

[Kendahl]

Gas mileage varies because of personal style and city/highway split. Unless you are driving really hard in a city environment (full throttle acceleration followed by hard braking between stoplights), you shouldn't drop below 20 mpg. My G37S took a long time to get up to its long term average even though my driving remained the same. It finally maxed out between 23 and 24 mpg after an early summer vacation trip that took the odometer from 4,000 to 5,500 miles.

My tire pressure monitor does not report psi. If pressure in one or more tires falls too low, the warning symbol inside the tachometer lights up. It doesn't tell you which are the culprits; that takes a tire gauge. I have had it come on three times. Two of them were in the late fall. Gradual loss of pressure over time coupled with dropping temperatures got one tire below the minimum. The third time it was due to a screw in a rear tire.

Your trunk lid needs adjustment by the dealer as a warranty repair. It should close very easily every time.

[jdag]

Thanks, Kendahl. You've confirmed my suspicions on all 3 items. That fuel mileage...wow...it really needs to come up! I was shocked to see it below 16. I just traded a 2008 Acura TL and would get 22-24 every time...28-30 on highway trips.

[taskmaxter]

I have the exact same problem when trying to close my trunk. Sometimes it will close easily, but most of the time it feels like it is bouncing off of the internal latch. Going to have it checked out next time I take it in.

[jdag]

Yup...feels like it is just hitting some sort of stop and bouncing back. I am taking it in today and will let you know what they say.

[g25dragon]

jdag,

City driving is the hardest to predict, it is dependent on your driving habits, the speed limits, how many stops you have to make, how much time you have to idle, etc. Also, car manufacturers design their cars to optimize gas mileage based on the EPA "city course", which may not even be close to what your "city" driving actually is.

What I would suggest is fill up your tank, reset the mpg indicator, get on a highway/freeway and drive a couple of hours at freeway speeds. You'll feel better knowing that at least freeway is getting the same or better rated mileage.

I have a 2011 g25 with over 1000 miles now and have a pretty good feel for the gas mileage. I'm getting 14-16 around town (rated 20 city) with no freeway driving, and 30-32 freeway (rated 29). My "around town" is short 10 minute drives with 7 or 8 stops and a max speed of around 45 mph. In these types of conditions, any car would get below the EPA's estimated city, and all of the other cars I have driven around town have gotten 2-4 mpg less than the EPA city ratings.

I felt a little better, my g25 was at the dealer for a couple of days, so I had a g37 loaner which got 13 on the same "around town" course.

FYI, here's the EPA's test info.

How are Vehicles Tested?

Vehicles are driven over identical driving patterns by professional drivers in controlled laboratory conditions on a dynamometer, which is like a treadmill for cars. The conditions that occur during driving, such as wind drag and inertia are accounted for on the dynamometer. There are two types of tests that are conducted: city and highway tests.

The city test is approximately 11 miles long and simulates a stop and go trip with an average speed of about 20 miles per hour (mph). The trip lasts 31 minutes and has 23 stops. About 18 percent of the time is spent idling (as in waiting for traffic lights). A short freeway driving segment is included in the test. The engine is initially started after being parked overnight.

The highway simulates a 10 mile trip with an average speed of 48 mph. The vehicle is started "hot" and there is very little idling and no stops.

[SVTCOBRA]

Congrats & Welcome to Nico!!

[jdag]

Just had the trunk issue solved...minor adjustment.

As for gas mileage, I will watch it and my style and see where it goes.

[bentrod]

Welcome to NICO. My 2010 G37X, which has the same motor, has been awesome on mpg when you consider the Horses. Over the last 4000 miles. my average is 23.2 mpg. Most of this is commuting in fairly heavy traffic and three trips on the highway with a heavy foot. At 75mph on the highway the mileage gets close to 25.5 mpg. God, I love this car...

[jdag]

I LOVE LOVE LOVE LOVE this car...it is a blast to drive (and I have a Corvette too!). But the mileage....UUGH! I hope it improves!

[joe603]

Welcome to NICO for the OP and the G25 owner! They are great cars...this is my second G

[kmckis1029]

Welcome to NICO for the OP and the G25 owner! They are great cars...this is my second G

+1 my second G!