Overview & Reviews

The M45 is completely redesigned for 2006 and bears no relation to the 2003-2004 M.

• Explosive power from smooth V8, capable handling, plenty of luxury features, excellent transmission.

• Noisy ride, complicated center stack controls.

User Reviews:

Showing 1 through 10 of 84.00

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  The Beast Within - 2006 Infiniti M45
  By jrh332 - July 28 - 10:00 am

  Had my choices narrowed down to Audi A6 S line or the M45 Sport. Infiniti won hands down and didnt hurt being roughly $8000 cheaper with about the same equipment level. I know it doesnt have all the Audi features but the Audi doesnt have all the M45s equipment either. Truely a drivers car. The performance out of this 4000 lbs car is something you have to experience. Performance tires may pick up some noise depending on pavement otherwise as quiet as sitting in your living room. Controlled ride and appears to be screwed together pretty good.

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  2006 M45 Sport - 2006 Infiniti M45
  By Brettrun - March 12 - 9:33 am

  I have had this car for about two weeks now and it has been awesome! It replaces a G35 coupe and the difference in fit, finish and quality is amazing. I had two G35s and always was disappointed by the cheap and often squeaky interior. The M45 is a world apart in terms of materials and and the feel of quality. If anything, the car is faster too. There is no substitute for pure V8 power and torque! The list of technology and features on the car is a huge leap also. Especially if you love the gadgets like I do. I compared the Lexus GS and Acura RL and found the M45 to be the best choice for me. It is more of a SPORTS luxury car, but has all the features of the other two if not more.

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  fantastic car - 2006 Infiniti M45
  By JEFF - December 21 - 9:40 am

  This car is really fun to drive; terrific acceleration on the freeway. As a former Lexus owner, the road feel of the M45 is a welcome change from riding in a cocoon. The dash console is attractive but a little confusing. Sirius satellite radio is a big plus.

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  Charlotte NC - 2006 Infiniti M45
  By JP - January 26 - 3:36 pm

  Fun car to drive, AC seats are awesome, my wife says everyone stares at the car when she takes it out but its really her. I have the sport package and it is great, I also have a 1 yr old and do not suggest the car as a alternative to the minivan

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  Save money, buy lexus - 2006 Infiniti M45
  By CHUCK - October 6 - 11:50 am

  A little harsh ride and quite noisy for a $50k plus vehicle. This clunker has been in the shop almost as many days as its been on the road. "Smart" cruise control shuts off if headed into the sun. Lane departure system beeps when Im in the middle of the lane. Brake cylinder needed to be repaired, door seal deteriorated, AND I ONLY HAVE 7,000 MILES ON IT!!! Looks great but Lexus makes a much better vehicle in the ES330 and GS series and the Lexus ownership experience is far superior (I also have a Lexus SC 430). Dealership treats me like I bought a Yugo. I have already traded this piece of crap after only 6 months on an ES 330.

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  06M45 - 2006 Infiniti M45
  By otisdog7 - August 29 - 12:36 am

  Great car so far. Pretty fast, handles like a dream. Not so sure about the redundant controls for audio, climate etc, But overall a great car.

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  Great Car - 2006 Infiniti M45
  By cst - May 1 - 5:23 pm

  This is a remarkable car. I cant get over how well the Sport stick through corners. The active steering is a real bonus for "spirited" driving. Everything works well, although the lane departure warning can be annoying.

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  Acceleration blocked - 2006 Infiniti M45
  By Bob Ringgenberrg - March 23 - 11:13 pm

  Rarely when attempting to accelerate for a stop or slow speed, it gets stuck at 2,000 rpm and 20 mph and will not advance . You must take your foot off the accelerator and reapply slowly, Same with the manual mode. Can be dangerus when changing lanes in heavy traffic. To dealer 3 timers, they say they can not replicate this and it is fine. It is not fine, did this from day one. Some one said a software problem may exist as it is 1st generation software. I think I will trade in on a G35. I really like the M45 but but every time you want to get up and go you hold your breath because there is a chance it wont. Any help appreciated.

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  Great value, still not quite first tier - 2006 Infiniti M45
  By Paul Rogers - October 28 - 3:03 am

  I have come to the M45 after 12 years of owning much higher-end luxry performance cars: Mercedes SL55, Jaguar XJR, Acura NSX. The M45 won me over with the only interior design comparable to the first-tier cars, and very reasonable performance for a 4 door sedan. Exterior design is uninspiring, sharing far too much with the Nissan Altima and Maxima. Highs: interior design, wheels, ride comfort, seating room, performance capability, value. Mediums: steering response, exterior styling, exterior fit and finish, paint quality, audio Lows: interior fit and finish (relative to class); buggy XM radio implementation; rear shade is $5000 option (because it is bundled with rear video screen)

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  Expensive: Low Quality Features - 2006 Infiniti M45
  By dembinsk - December 13 - 4:43 pm

  I have owned a 02 BMW 330 sport sedan, a 03 BMW 540 sport manual 6 speed, and finally decided to give the japanese a try. The Infiniti M45 is by far the closest feel to the germans you can get in a japanese sports sedan. Great reliability, great styling, and many features. Problem with the car is the horrible gas mileage averaging 13.5 MPG in the city and thats 3.4 MPG less than my BMW 540. Tons of features but they are all low grade. For example..the seat heaters dont even compare to the BMWs, the sound system is very hollow and tin sounding (plastic like), shared dashboard gauges from the Altima, and last...the suspension is horribly rough on everyone in the car.