How many miles can an Infiniti G37 last? When you’re in the market for a new or second-hand G37, that’s, of course, a very reasonable question to ask. After all, you’re probably looking to get the most bang for your buck. In this blog, we’ll look at this question in great detail but first, let’s start with a quick answer:
On average, an Infiniti G37 lasts between 180.000 – 200.000 miles. A G37 needs to go to the garage for unscheduled repairs about 0.51 times per year, with an 8% chance of severe problems. Furthermore, G37 owners spend an average of $540 per year on repair costs.
Having said that, we’re certainly not done. Below we’ll first explain in more detail how many miles a G37 can last. After that, we’ll also show you how much a G37 costs per year and which production years are the most and least expensive. Furthermore, we also discuss the common problems that the car can have. Read on!
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How Many Miles Can A Infiniti G37 Last?
First, we need to have a look at the Infiniti G37 as a group. In order to do this, we went to autotrader.com and gathered the data of the 881 G37 Infinitis that are currently for sale. From there on, we divided the sample group into groups based on the number of miles they had driven.
The results are displayed in the table below. What we can see from this is the fact that 8.05% of G37s that are for sale in the US market have a mileage of 150.000 or higher. By itself, this number doesn´t say a lot. However, we´ve written 100+ articles similar articles for different vehicles. From this, we know that a number between 3-5% is typically considered to be good. The fact that the G37 scored well over 8% means it does seem to be reliable at first glance.
| Amount Of Miles | Percentage Of Cars |
| Cars With 150.000+ | 8.05% |
| Cars With 100.000 – 149.000 | 40.40% |
| Cars With 45.000 – 99.999 | 47.58% |
| Cars With 0 – 44.999 | 3.97% |
However, there´s certainly more to it than just that. For example, the G37 was discontinued in 2013. This means that the vehicles that are still on the road have had time to rack in the miles, whereas there´re no vehicles dragging the average down. Therefore, the data is still a bit inconclusive, but it does still seem that the G37 provides decent mileage. Let´s have a look at a few different factors to determine whether or not the G37 is worth getting.
How Reliable Is A Infiniti G37 Compared To Its Competitors?
One of the most important things that can tell us whether or not the G37 actually reliable is to look at competitors. The data from the competitors will give us a better understanding of the playing field, and we will be able to set benchmarks for the G37.
In the table below we´ve gathered data for competitors of the G37. Please keep in mind that we´ve written separate articles for every single vehicle in the table. Therefore, we´re confident in the results that we display below.
| Model | Sample Size | Expected Mileage | Highest Mileage |
| Infiniti G37 | 881 | 190.000 | 220.000 |
| Acura TL | 877 | 255.000 | 330.000 |
| BMW 3 Series | 10.398 | 240.000 | 250.000 |
| Mazda 6 | 2.915 | 215.000 | 290.000 |
| Mercedes-Benz C-Class | 9.763 | 180.000 | 220.000 |
| Audi A4 | 3.963 | 190.000 | 250.000 |
What´s interesting about the data in the table is the fact that the results are quite a mixed bag. On one hand, we have the Acura TL and the BMW 3-series which have an expected mileage of close to or over 250.000. On the other hand, we have the G37, A4, C-Class, and the Mazda 6 which all score close to or under 200.000 miles.
Personally, what I find most interesting is the fact that the Acura TL (a vehicle that got taken out of production in 2014, just like the G37 in 2013) scores much better than the G37. We wrote a separate article on that vehicle as well and we found that a staggering 29.99% of TLs had a mileage of over 150.000.
For this reason, it does seem like the G37 is losing to the Acura TL and the 3-series in terms of reliability. However, it is quite similar to other luxury vehicles such as the A4 and C-Class.
How Reliable Is A Infiniti G37 Compared To Other Infinitis?
Furthermore, we also feel it´s important to compare the G37 to other Infinitis. The reason for this is the fact that this will give us an understanding of how reliable the brand is as a whole and if there´re alternatives within the lineup of Infiniti.
In the table below, it becomes clear quite quickly that the results are mixed. However, there´s a reason for that. The Q50 and the QX80 are both quite new and therefore haven´t had time to drive higher mileages.
However, what is interesting to see in the table is that the G35 has such a high percentage of vehicles crossing the 150.000 miles mark. When we dive deeper into this we find that the G35 got taken out of production in 2007, therefore the vehicles that were sold have had time to reach higher mileage.
| Model | Sample Size | Cars With 150.000+ Miles | % Percentage Of Cars With 150.000+ | Highest Mileage |
| Infiniti G37 | 881 | 71 | 8.05% | 220.000 |
| Infiniti G35 | 331 | 94 | 28.40% | 250.000 |
| Infiniti Q50 | 4217 | 21 | 0.49% | 160.000 |
| Infiniti QX80 | 2210 | 31 | 1.40% | 230.000 |
Whether or not this table speaks in favor or against Infiniti is debatable. On one hand, the G35 did great, the G37 seems to still have to prove itself, and the other vehicles are too new to provide accurate data points. So far, it does seem like Infiniti behaves like a luxury/premium brand which means the vehicles don´t reach ultra-high mileages (250.000+ regularly).
How Much Does Maintenance Cost Per Year?
Another important aspect to discuss when talking about the reliability of a vehicle is how much you can expect to pay in annual maintenance costs. To gather this data we went to Repairpal.com. The results are displayed in the table below.
| Model Year | Annual Maintenance Cost |
| 2008 | $486 |
| 2009 | $514 |
| 2010 | $488 |
| 2011 | $511 |
| 2012 | $540 |
| 2013 | $603 |
On average, you would have to spend $540 annually to keep a G37 on the road. When we compare this to the average of the luxury sedan category (which is $739 per year) we see the G37 actually does really well in terms of maintenance costs. This is to be expected since Asian luxury brands like Acura, Lexus and Infiniti are much cheaper than their German counterparts like BMW, Mercedes, and Audi.
So far, it seems like the G37 doesn´t do extraordinary mileage, but it is quite affordable for the number of miles it does drive.
Also read: The Complete Cost Of Maintaining An Infiniti
Owners’ Reviews Of The G37s Reliability
Besides knowing all the data, it’s, of course, also essential to see how owners experience the G37. For this, we went to Kelley Blue Book, Edmunds, and Cars.com. All three platforms have gathered hundreds of reviews from actual car owners. We summarized our findings in the image below.
What we found is that the Infiniti G37 has gathered excellent ratings on all three of these platforms. The main reason for this is the fact that very few models seem to be troubled with problems. In other luxury brands, we often see that some units are excellent while others are absolute lemons.
In the case of the G37, we see that almost all owners seem to be pleased with their models. The car gets described as the ´Japanese BMW´. This review sums up the general sentiment quite well:
it is a comfortable sport-sedan that is also reliable. It drives well and it comes with most of the luxury options. After-market and performance upgrade parts are more affordable than other makes. It is easier to work on as a DIY person myself.
Source, 2013 owners
Infiniti G37 Common Problems
The thing that keeps us worried while buying a vehicle is its reliability, and we have to make sure that the one we are going to buy wouldn’t pose any major issue or even a minor one in that regard. It’s inevitable to prevent faults in a vehicle, and this vehicle is no exception. However, we do have to say that the Infiniti G37 doesn´t have catastrophic problems or ones that make us stay away from the car in the second-hand market.
NOTE: Before buying a used car, I always like to make sure the vehicle isn´t having any problems that you should be aware of. The easiest way to do this is by buying an OBD2 scanner. These scanners can easily be plugged into any car you’re interested in, and they’ll give you a rundown of potential problems.
Problematic Airbags
All model years of the G37 have a systematic problem with the occupant classification system. This system registers whether or not someone is sitting in the passenger seat and if the airbag should be activated or not. There was a recall for the 2007 – 2008 model years (08V521000), but the problem extended all the way to the 2013 model year.
The problem mainly entails a faulty sensor in the passenger seat. Some mechanics advise replacing this sensor but this can be expensive and sometimes it´s unsure whether or not this will fix the issue.
Powertrain Responsiveness Issues
The 7-speed transmission in the G37 was a bit problematic from the very first model year. Infiniti eventually identified the problem and stated that the symptoms were as follows:
- Harsher than expected downshifts when coasting to a stop.
- Hesitation/lag when accelerating after coasting.
- Hesitation/lag or harsher than expected downshifts when coming to a stop and accelerating again
(rolling stop). - Engine rev matching during moderate to heavy braking.
What´s interesting about this is that Infiniti only issued a service bulletin for the 2010 – 2011 G37 whereas previous model years already experienced the problems. These owners weren´t compensated or helped in any way. The service bulletin involved reprogramming the ECM and the TCM as described in this document.
Sudden Acceleration
Another, more dangerous issue with the G37 is that some owners have reported sudden acceleration when parking the vehicle. This often resulted in cars being driven into other cars or landmarks. What actually caused this has never been investigated properly.
However, we´ve seen the issue with other brands as well and oftentimes it turns out there´s a faulty speed sensor. Nevertheless, the issue wasn´t mentioned ridiculously often but did happen for certain units from time to time.
Some Structural Issues
Finally, there´re some structural issues that need to be mentioned. From 2010 onwards owners have complained about melting dashboards which then cause so much sun flare that driving becomes impossible.
Furthermore, failing door lock actuators can make it impossible to open the doors and then need to be replaced.
Is An Infiniti G37 A Smart Buy?
Finally, we have to answer the question of whether or not the Infiniti G37 is a vehicle that´s worth getting in the second-hand market or not. When we look at the number of miles it can drive, we see that 200.000 miles should be possible. However, whether or not the vehicle will last much longer after that is questionable. In this case, the Acura TL and BMW 3-Series perform better.
However, we did also see that owners are very pleased with owning a G37 and that annual maintenance costs are low. Furthermore, the vehicle does have some problems but nothing that´s considered a dealbreaker.
In the end, we think whether or not you should get a G37 depends on how many miles the vehicle has already driven. If you´re able to find a unit that has 80.000 – 120.000 miles on it then you can be sure it´s halfway its total lifespan. This will make sure you can still enjoy the car for a good few years. Furthermore, those years will most likely be quite pain-free. All these factors do make the G37 a car worth considering.
Infiniti G37 Maintenance Schedule
If you are one of those who already have an Infiniti G37 and you are willing to keep it healthy for a long time, then this schedule is for you. After going through your options, you can have a better feel for the G37 when you have an idea of the things that need maintenance regularly.
The dealerships recommend changing the engine oil at 10,000 miles, but it should be changed before 7,000 miles to get the best performance and reliability.
On/Before 10,000 Miles
- Engine oil replacement
- Oil filter replacement
- Gaskets inspection and replacement
- Though lubrication of all the components that require it.
- Electronics system check
- Brake check
- Airbag inspection
On/Before Every 20,000 Miles
- Gaskets inspection and replacement
- Lubrication of the required components
- Brakes check, fluid check, pads check
- Power steering check
- Electronics check
- Tire inspection/rotation.
- Check for any oil leaks
On/Before Every 40,000 miles
- Change the air filter
- Airconditioning inspection
- Electronics check
- Battery check
- Brakes check
- Sunroof check
- Thoroughly inspect for any oil leaks
- See if there is any unusual rattle
- Engine diagnosis.
- Check the transmission fluid and change if necessary
On/Before Every 60,000 Mile
- Replace the spark plugs
- Replace the ignition coils and the connecting harness if necessary.
- Timing chain inspection
- Fluid levels check
- Inspection for any rust
- Software update if available.
Hi! My name is Stefan; I’m the owner and lead writer at TheDriverAdviser.com.
I’m an active writer on this blog myself, as well as a novice car mechanic. For the really technical stuff, I find writers with experience as a mechanic or who have studied mechanical engineering.
Read more about our fantastic team on our about page!