Overview & Reviews

Infiniti has moved the CD changer from the glovebox to the dash. Several of last year's options are standard for 2004, including heated outside mirrors, an auto-dimming rearview mirror with Homelink and compass, two-position memory for the driver seat, a tire-pressure monitoring system and a full-size spare tire. The navigation system (with voice recognition technology) is now available as a stand-alone option.

• Brawny V8 engine, capable handling, plenty of luxury features, reasonable price.

• Limited rear-seat legroom and trunk space, complicated center stack controls.

User Reviews:

Showing 11 through 20 of 32.00

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  highway cruise - 2004 Infiniti M45
  By ggfires - April 10 - 10:00 am

  A consistant 21 mpg with 80 percent highway and 20 percent city. Outstanding performance and handling for the 2 lane roads.

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  Wolf in Sheeps Clothing - 2004 Infiniti M45
  By nbeyond - March 5 - 5:36 am

  Went in to look at the G35, but was not as impressed with that car as reviews had led me to believe. Actually hadnt heard of the M45, but was immediately attracted to the interior design and comfort before I drove it. Then, wow! Clearly, a refined muscle car. You just dont expect to get quick acceleration and tight handling from what is essentially a luxury sedan. The Edmunds review compares the looks to a Cadillac DeVille, but with the rear spoiler and after adding custom chrome wheels, they couldnt be more wrong. I drove the Cadillac STS-V and BMW 545 before picking this car--couldnt see a good enough reason to spend another $10-15K. And, gotta love the reliability reports!

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  hot car - 2004 Infiniti M45
  By fariaro - January 21 - 10:00 am

  My only complaint is the transmission. It is rough and at certain rates of acceleration appears to not have enough torque for that gear, then downshifts.

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  My M45 - 2004 Infiniti M45
  By Stafford - October 30 - 12:23 am

  I purchased this car because it had a great review. After the initial purchase my experience was wow! I would love to purchase a new car but I am so satisfied with the overall experience that it make me scared that purchasing another car I will get less. Most new cars are great looking but their performance and overall quality is not as good as the 04 M45. A Mercedes S650 AMG. Talk about money. I guess its the 04 M45 for now and I love. See you on the highway in my rearview. LOL

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  excellent - 2004 Infiniti M45
  By wcosmo - July 22 - 10:00 am

  performance, nav and tech package are excellent mine is black/black, chrome weheels make the difference.

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  M45: Fun to Drive - 2004 Infiniti M45
  By hambone1958 - September 20 - 10:00 am

  I bought my wife an M45 for Valentines Day. This car is supposed to be a mans vehicle. But, she picked it out and fell in love with it. 340 Horsepower V-8, great interior, great styling. Did I mention 340 H.P.? Seriously, I consider all that power a safety item. It will get you out of many tight spots on the highway. If you need to pass, there is PLENTY of power. The interior is comfortable and beautiful. The 18" wheels set off the exterior. All in all, a great car. It really is a muscle car with a Phd. Also, even with the big V8, it still gets over 20 miles per gallon. Not bad.

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  Love My M45 - 2004 Infiniti M45
  By JoeK - May 15 - 10:00 am

  Whats not to like - 120 more hp than the BMW 530 and 40 more hp than the Lexus GS 430. Plus the car has a longer wheel base giving it a smother ride. Last but not least, the stereo system is about 100+/- watts more than the cars the M45s class and is equipped with Bose speakers. There just too many details to go into - 18 inch wheels, nav system, price, Infinity customer service....

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  Infiniti M45 - 2004 Infiniti M45
  By Denis Cagna - April 13 - 2:00 am

  Purchased one year ago (have identical 2003 model). Greatest feature is the seamless power from the engine. Beautiful. It is also a terrific value for the price.

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  Best V-8 deal going - 2004 Infiniti M45
  By Robert - November 23 - 9:40 pm

  For $40k, this is the best V-8 deal going. Scary fast, pretty quiet, great dealer, better than average warranty, and lots of interior features.

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  A lot of car for the money! - 2004 Infiniti M45
  By Enrico Gamboa - October 19 - 2:00 am

  I wanted a Mercedes E500 since Ive been driving Mercedes cars three years, but it stickers for $63k with the options I like. I decided to look at the 2003 Infiniti M45. The performance is fantastic! It looks great inside with plenty of new tech equipment and the exterior design is classic and modern. It has 340 hp compared to 302 hp in the Mercedes E500 and $17000 less on the MSRP. WOW!!! I love this car.