Limited rear-seat legroom and trunk space, complicated center stack controls.
What’s new
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.
Edmunds says
A capable Japanese sedan that makes a worthwhile alternative to Germany's midsize stalwarts.
Bought my 2004 brand new right after my BMW 540i came out of the shop, Again. It is an awesome car that is not well known. I took a BMW 530 to task with no problem. No one knows what this "sleeper" can do. Most don't even know what the M45 is. At 70 MPH this car is asking you to please let it go faster. At 100 MPH its asking to please open it up all the way. During that time it … feels and handles like a German car and the stereo is going, so pay attention to your driving. If you can't handle or appreciate very fast cars, go get a something else. This one is a dark horse among many wannabes. At today's prices its a steal. They won't be so low for long.
AWESOME BABY
4.88 out of 5 stars
Wags Nags, 06/29/2004
2004 INFINITI M45 4dr Sedan (4.5L 8cyl 5A)
I have had three Q45's before the M45
and this was not a step down. The M45
is a truely enjoyable and fun ride. The
M45 handles the road and is much more
sporty than the flagship Q. The
acceleration is mesmerizing. The driver
seat encompass the body like a glove. A
splendid vehicle. The only negative is
the confusing instumentation.
A lot of car for the money!
5 out of 5 stars
Enrico Gamboa, 03/19/2004
2004 INFINITI M45 4dr Sedan (4.5L 8cyl 5A)
I wanted a Mercedes E500 since I've
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.
So Smooth!
5 out of 5 stars
m45 owner, 05/29/2004
2004 INFINITI M45 4dr Sedan (4.5L 8cyl 5A)
Giant engine thrust and silent cabin,
clean understated lines, comfortable
appointments and no defects in 5,ooo
miles, better than '01 M Coupe, '02
Benz E previously owned. Narrow width
and cabin isolation make it good city
car, power and wheelbase a fine
highway cruiser. At cruise cont.
60mph got 28mpg. Very pleased. Super
low price.
![](data:image/svg+xml;charset=utf-8,%3Csvg xmlns="http://www.w3.org/2000/svg" width="1200" height="588" fill="none" preserveAspectRatio="none"%3E%3Cmask id="b" width="1200" height="588" x="0" y="0" maskUnits="userSpaceOnUse" style="mask-type:alpha"%3E%3Cpath fill="url(%23a)" d="M896 513c116 45.015 222 64 304 75V0H0v501c40 36.024 154 76 340 76s344-146.269 556-64Z"/%3E%3C/mask%3E%3Cg mask="url(%23b)"%3E%3Cpath fill="url(%23c)" d="M896 513c116 45.015 222 64 304 75V0H0v501c40 36.024 154 76 340 76s344-146.269 556-64Z"/%3E%3Cpath fill="url(%23d)" fill-opacity=".15" d="M581.718 62.893c42.993 1.53 86.281 5.888 129.704 13.204 311.828 52.485 552.538 242.016 657.698 483.656-149.97-147.971-450.891-226.33-789.375-232.079-338.534.839-640.434 74.572-792.746 220.292 108.75-240.047 352.255-425.97 664.832-473.803a1041.548 1041.548 0 0 1 129.887-11.27Z"/%3E%3Cpath fill="url(%23e)" fill-opacity=".5" d="M611.247 209.93a1458.84 1458.84 0 0 1 139.573 27.692c333.61 83.239 577.16 267.208 668.67 475.188-148.93-138.63-468.279-241.218-835.209-290.421-367.6-43.915-702.265-24.445-881.281 72.561 140.567-178.524 422.355-295.817 766.181-293.074 47.867.484 95.274 3.212 142.066 8.054Z"/%3E%3Cpath fill="url(%23f)" d="M735.039 879.394c48.524-6.62 97.023-16.967 145.3-31.2C1227.03 746.059 1475.76 472.327 1564.28 145c-151.17 209.633-482.23 344.436-865.05 388.31C315.515 568.571-35.93 504.564-227 330.342-73.333 632.61 226.169 849.617 586.429 878.604c50.15 3.871 99.74 4.07 148.61.79Z" opacity=".3"/%3E%3Cpath fill="url(%23g)" d="M694.222 783.712c50.956 12 103.317 20.27 156.946 24.578 385.102 31.013 738.232-146.76 952.062-439.434-231.22 151.216-613.24 158.795-1012.047 55.796C394.784 312.716 68.643 114.101-55.211-133c37.44 360.528 253.087 691.895 601.449 858.946 48.557 23.091 97.963 42.302 147.984 57.766Z" opacity=".9"/%3E%3Cpath fill="url(%23h)" fill-opacity=".5" d="M896 513c116 45.015 222 64 304 75V0H0v501c40 36.024 154 76 340 76s344-146.269 556-64Z"/%3E%3C/g%3E%3Cdefs%3E%3ClinearGradient id="a" x1="1005" x2="989.087" y1="23" y2="552.522" gradientUnits="userSpaceOnUse"%3E%3Cstop stop-color="%23007EE5"/%3E%3Cstop offset=".333" stop-color="%231561D4"/%3E%3Cstop offset="1" stop-color="%230A4AAB"/%3E%3C/linearGradient%3E%3ClinearGradient id="c" x1="1005" x2="989.087" y1="23" y2="552.522" gradientUnits="userSpaceOnUse"%3E%3Cstop stop-color="%23007EE5"/%3E%3Cstop offset=".334" stop-color="%231561D4"/%3E%3C/linearGradient%3E%3ClinearGradient id="d" x1="675.999" x2="879.999" y1="648.999" y2="120.999" gradientUnits="userSpaceOnUse"%3E%3Cstop stop-color="%23fff"/%3E%3Cstop offset="1" stop-color="%23fff" stop-opacity="0"/%3E%3C/linearGradient%3E%3ClinearGradient id="e" x1="656.5" x2="637.602" y1="213" y2="622.259" gradientUnits="userSpaceOnUse"%3E%3Cstop offset=".115" stop-color="%23fff" stop-opacity="0"/%3E%3Cstop offset=".944" stop-color="%23017D8D"/%3E%3C/linearGradient%3E%3ClinearGradient id="f" x1="398" x2="737" y1="599" y2="387" gradientUnits="userSpaceOnUse"%3E%3Cstop stop-color="%2300ABB5"/%3E%3Cstop offset="1" stop-color="%2300A0B5" stop-opacity="0"/%3E%3C/linearGradient%3E%3ClinearGradient id="g" x1="1051.5" x2="271" y1="567" y2="575" gradientUnits="userSpaceOnUse"%3E%3Cstop stop-color="%230098C2"/%3E%3Cstop offset="1" stop-color="%23033E96" stop-opacity="0"/%3E%3C/linearGradient%3E%3ClinearGradient id="h" x1="1005" x2="986.038" y1="23" y2="587.43" gradientUnits="userSpaceOnUse"%3E%3Cstop offset=".813" stop-opacity="0"/%3E%3Cstop offset=".972"/%3E%3C/linearGradient%3E%3C/defs%3E%3C/svg%3E)
