Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!





2008 Infiniti M35

pearlpearl Posts: 336
edited May 2 in Infiniti
wanted to start a thread where people could post information about next year's model. Last year we heard lots of rumors about Infiniti trademarking M37, which suggests that rather than just putting the VQ engine from the G into next year's M, they may put in a larger version. Also, Infiniti continues to take hits over gas mileage. Maybe 08 will be the year that we finally get a six speed automatic and other refinements to help mpg while maintaining performance.
«1345

Comments

  • pearl,

    Regarding "get a six speed automatic and other refinements to help mpg while maintaining performance", I don't disagree with improved mileage, and that could also lead to reduced engine revs at highway speeds.

    But in my own expereince with BMWs, I found you get improved performance with a 6 speed versus 5 speed automatic, at least in responsiveness.

    Thanks
    Bruce
  • pearlpearl Posts: 336
    Bruce, I agree. The benefit of a six speed is that it gives you high enough gears (numerically) to enable quick acceleration, but then sixth gear is low enough (overdrive) to provide lower rpms for highway cruising and better mpg. So far, Infiniti seems to have chosen to use a high (numerically) rear axle ratio, AND a five speed auto trans with high numerical gears, meaning you get lots of torque multiplication for acceleration in just about any gear including fifth - the drawback is that you end up cruising at something like 3000 rpm at 70, when most of the competition is 2500 or less. A six speed should provide better mpg but not hurt lower gear acceleration ((there is a lot more to this subject, but all else equal, what I just wrote is true)).
  • ocimocim Posts: 45
    So, is it the general belief that the 08 M35X will have a different engine that the current model, regardless whether it is a 3.7 or 3.5? I am looking to purchase the car however, I would prefer to wait until fall if more HP is on the way.
  • pearlpearl Posts: 336
    While I don't think there has been anything official put out yet, Infiniti replaced the 3.5L VQ engine in the G this year with an improved version that puts out more horsepower and is slightly more fuel efficient. Many people on these boards wondered why they didn't also put it into the 07 M? We don't know, but some months back, someone posted that they had learned that Infiniti had trademarked the designator "M37", so of course the speculation started that they would use an engine of this displacement in the 08 M. Obviously, none of us know yet; however, the competition is starting to run away from Infiniti in terms of gas mileage, power and more advanced auto transmissions, so it seems at least possible that we will see some changes for 08.
  • kalskals Posts: 4
    I don't see how the new V6 in the 07 G is going to make that much of a difference in performance and fuel economy in the M. What the wonderful VQ series V6 engine lacks is low end torque. Does anyone think Infiniti might go to a CVT transmission like Nissan has in the Altima. This would offer better performance and economy.
  • james27james27 Posts: 433
    No idea on the cvt. They do seem to be able to scale up the design to handle more power than they used to, but there seems to be a limitation when it comes to all-wheel drive. I know that Audi offered it, but only on their front-wheel drive models. Haven't followed it close enough to know if they've changed, or even if it is still available. They do offer this transmission on the 270HP 3.5L in the ALtima.
  • I don't think adding a CVT tranny is instant improved gas milage. It all depends how the engineers "set it up" like with final drive ratios on conventional transmissions. The idea of a CVT on an M doesn't excite me. Considering Lexus is up to an 8 speed auto tranny, Infiniti is a few behind.
  • art234art234 Posts: 103
    I have a 2006 M35X and the problem is the gearing. No high powered car should be turning 2500 RPM at 60 MPH in the highest gear, or 2800 RPM at 70. Adding one or two longer gears would address this issue. RPM's should typically be 1500-1700 at 60, and remain under 2000 at 70. I believe the difference in fuel economy would be substantial, without sacrificing performance.

    Regarding CVT's, I have experience with 2 CVT's. I had a 2003 Murano with the first gen CVT, and I also have a 2006 Lexus RX400h which has the Toyota CVT. The main advantage of the CVT is that it "locks up" at much lower speeds than a conventional transmission. I believe the Murano's torque converter locked up as slow as 10 MPH, while a typical multi gear tranny does so above 30-35 MPH.

    The M's fuel economy is embarrassing for such a technologically advanced vehicle.
  • buddybradbuddybrad Posts: 36
    You're right, the M35 and probably the M45 should have much better gas mileage. I believe they could achieve it by tweaking the computer and changing out the final drive ratio to something higher. 5 speeds with the 5th being overdrive is easy to get 2,000 rpm at 60 mph out of.

    I have a '71 Buick with 350 4bbl and 3-speed transmission and I can get in the high teens cruising at 70 mph. It has a 3.08 rear end.
  • james27james27 Posts: 433
    I get in the low 20's on my M35x at a steady 70-75 or so using the cruise on an interstate. I average around 19 or so in my 40 mile commute unless the traffic backs up. The traffic is often running between 70 and 80. The car could get probably considerably higher mileage if the top gear was higher. Someone else mentioned running the transmission in Manual mode which can help. They have the transmission programmed to downshift at the slightest provocation. Putting it in M, means that you control that. Fine on an interstate, but maybe not for stop and go traffic. Try it and see what you think.
  • patpat Posts: 10,421
    Some posts have been moved to a more appropriate discussion. Here's the link: blov8r, "M35/M45 and Bluetooth" #147, 4 Mar 2007 9:16 am. Let's continue there.
  • bruceomegabruceomega Posts: 250
    I was browsing through the latest issues of the car mags over the weekend. In one of the write-ups on the new G series coupe, it mentioned the 3.7 liter V-6 engine would find its way into the M35.

    Has anyone heard anything further about upgrading the engine in the M35, perhaps for the 2008 model year? If so, any idea whether Infiniti will offer a 6-speed automatic?

    Thanks
    Bruce
  • ocimocim Posts: 45
    I saw in Road and Track magazine that the new 2008 G coupe will have the 3.7 liter engine, however I did not see anywhere that it will carry over to the M. Has anyone else heard anything? I test drove a 2007 M35X a while back and I liked it a lot. Although, I wouldn't mind a little more power. I did not spend any time on the highway with the car so I am greatly concerned about what I hear from many posts that the car revs too high in 5th (over 3000 rpm at 70MPH. This is unacceptable. My Honda Pilot with 240 horsepower revs around 2200 at 80MPH. I used to have a 1991 Honda Prelude that revved high in 5th. The noise on a trip from Pittsburgh to Chicago (8hrs) would beat me up so much that I finally got rid of the car for this reason. The Infiniti is supposed to be a luxury car in addition to being a sport sedan. If a 50K luxury car can't provide a similar level of comfort on a long trip as my pilot does I don't want it. So I hope they change the engine and do something with the 5th gear, perhaps add an extra one. Infiniti I hope you are listening!!!
  • pearlpearl Posts: 336
    someone reported that Infiniti has trademarked "M37". Since they now have a 3.7L engine, it follows that at some point, it is likely that this engine, or some variation, will show up in the M. 2008 models is a good guess, but we do not know for sure.
  • bruceomegabruceomega Posts: 250
    ocim,

    I stopped by the newsstand this evening. The mention of the new 3.7 engine possibly going into the M was in the May issue of Motor Trend, page 56, first paragraph (which is a continuation from the previous page).

    Bruce
  • towermantowerman Posts: 12
    I'm in the throws of finalizing purchase of my M35 sport and I've been asking everybody when the 2008 will arrive and what's new. I'm pretty sure the engine will stay the same and only minor "feature" options will arrive. For instance, only XM radio (not Sirius) will be installed and it will be standard equipment. I understand 2009 will bring a new body and the 3.7L engine will come in the M35 (M37?). My question is when will 2008's really arrive?
  • blov8rblov8r Posts: 567
    I would thoroughly expect that engine to be in the M as well as the G ... simple economics. Why have two different engines (and everything that goes along with them) in two lines of the same breed? While I love horsepower and torque, I'd be just as happy with a 5th or 6th gear to lower the hiway revs and conserve fuel without sacrificing performance.

    Bart :shades:
  • ghstudioghstudio Posts: 954
    if you are right about the changes coming in the 2009 model, then you should be asking about when the 2009's will become available. A 2008 M with the same engine and transmission will be a non player in the market and the 2009's will be announced VERY early when Nissan realizes their mistake.
  • Does anybody know when the switch over happens between ordering a 2007 and 2008? My wife and I are talking with our local dealer about ordering an M35 Sport and figure if they can order a 2008 soon we will just hold off a bit. :confuse:
  • towermantowerman Posts: 12
    I just picked up my 2007 M35 Sport and they told me 2008 won't be in until September. If you can find a 2007 you want in stock with the options you want in the color you want you can get the car at Invoice - -I'd think that will be harder to pull off with the 2008's.
  • james27james27 Posts: 433
    The dealer indicates there will be a fair number of changes to the M-series for 2008, with maybe the biggest in the M45x. Said more aggressive styling and new wheels.
  • ghstudioghstudio Posts: 954
    The car doesn't need more aggressive styling and new wheels....it needs a more powerful engine and a new transmission. Sounds like Infiniti is going to try to keep the M the same year to year with the usual nothing worthwhile changes....a new taillight, new wheels.

    That won't work for me...if that's all they do, then when my lease is up, I'll be in some other car for the next lesae
  • bruceomegabruceomega Posts: 250
    james27,

    When you mention M45x, does that mean Infiniti is coming out with AWD for the V-8? Or did you mean to say M35x?

    Thanks
    Bruce
  • blov8rblov8r Posts: 567
    For the two-plus years this M has been on the market the biggest complaint that has been posted over and over again is the transmission ... need for a 5th, even 6th gear. There's plenty of power in this 2-ton car to push it along with the rest of the competition but the tranny lacks a highway "overdrive" gear to decrease the high speed rpm's and improve fuel economy.

    By way of comparison, I just rented a 36' RV for a weekend with a Ford V-10 ... it had an OD gear and at 65 mph was turning a mere 2500 rpm. Bart :(
  • tayl0rdtayl0rd Posts: 1,938
    But was it the diesel or the gas V10? And the M does have a 5th gear, doesn't it? :confuse:

    To the guy that said it needs more power, I don't think I've read a single post that it was underpowered in V6 or V8 form; though, the V8 could use some more juice simply for appearances. The 550i and E550 have 360HP and 382HP, respectively. But the M45 is still competitive against the A6 4.2.
  • james27james27 Posts: 433
    V-8, all wheel drive model M45x.
  • bruceomegabruceomega Posts: 250
    An AWD V-8 would be very interesting, and broaden the playing field.

    I've been looking at the new 535Xi, and an M45x would be a more attractive alternative to me than the M35x.

    Does the M45 with auto have the same issue some have raised with the M35 auto regarding high engine revs at highway speed?

    Thanks
    Bruce
  • james27james27 Posts: 433
    No clue...see if you can find a talkative dealer, or wait a little longer to see what the magazines say.
  • blov8rblov8r Posts: 567
    It was the gas V-10. My M35 revs the same at 65. Bart
  • plinaplina Posts: 33
    Infiniti has to do something for 2008 they can't have a G sedan and G coupe with mre horsepower than the M35/45.
    I mileage in NYC is a dismal 9 MPG and at $3.59 A gallon they are in deep trouble with me. MY lease is up in 4/08 and I better see some changes, this is my 4th Infiniti and I dealt with the bad mileage when it was around 2 bucks a gallon I didn't care but when I spend $70 for a full tank and only get 200 miles the buck stops here.
    They will sell few M's if they don't improve the horsepower and mileage, I want a 7 speed tranny.
«1345
This discussion has been closed.