2003 Infiniti M45 Navigation 4.5L from North America


Japanese Cadillac


Exhaust manifold.

Parking brake.

Various interior lights.

ABS sensors.

Tire pressure sensors.

Oil consumption.

Gas gauge misreading.

General Comments:

Nice car. Classic style. The parts on this car are ridiculously expensive. So become best friends with your scrap yard and mechanic.

Not many aftermarket parts, so Infiniti dealer parts high prices are unavoidable sometimes. Way too many sensors for everything makes simple repairs difficult.

People complain about the build quality. It's a 10 year old car! A high original price doesn't mean better overall quality!

My advice is buy this car as cheap as you can and use the money you saved for future repairs. The transmission can be sluggish. Changing your fluid does wonders.

Great power, still a 340 HP V8, still pulls hard. Seats are very comfortable. Interior is holding up well. Always get compliments on the car. Not too many around.

M45 running costs are high. Consider other models if you want cheaper.

Would you buy another car from this manufacturer? Yes

Review Date: 18th September, 2014

21st Sep 2014, 03:27

Nice review :) You get it ;)

You will never go wrong changing transmission fluid (and filter) early and often. The only caveat being getting a shop who actually changes the fluid, and uses decent quality fluid/filters.

22nd Sep 2014, 01:37

I actually did it myself. The fluid costs $12 a quart. I did a drain and fill. Took 4.4 quarts. Nissan type J fluid.

28th Sep 2014, 03:49

Excellent - early and often indeed!!!

Keep that up on an annual basis, and that tranny might live ;)

I say annual, as you are only replacing a fraction of the fluid. I'm nursing a 1999 Accord V6 that way, and it still hangs in there.

28th Nov 2014, 02:30

I just got the gas gauge repaired under recall. Be persistent with Infiniti and the dealership you chose to do the recall. Took 7 weeks of back and forth to get the job completed. Finally done :)

20th Nov 2015, 18:33

Still have my M45. Fixes needed... ABS sensor, driver's side strut mount, rear trunk struts, and lower control arms.

Just fixed the radiator ($200 aftermarket).

346,000 km on the car now. Still going!

21st Nov 2015, 02:19

Great bang for your buck car. In my area of southern California, they are going for peanuts. But the secret is buying a one owner car if you can with maintenance records. There are a few of them left out there. Common problems to that model, so you have to make sure it's already been fixed or the price adjusted so you can do the work yourself.

This is an amazing time for car lovers who have limited income and the ability to watch YouTube fix it videos and can turn a wrench. Most modern cars today are basically plug and play. So if you can put the square peg in the square hole... you can work on these cars.

30th Nov 2015, 23:17

M45's are holding up well in Canada, even with all the salt here.

Maybe because the car has real metal and weighs 4000lbs. Rusting away slowly LOL.

I had a 2002 Infiniti G20 and the body didn't hold up as well.

2006 Infiniti M45 Sport 4.5 V8 from North America


Really. Awesome. Vehicle.


Knock on wood... nothing really.

Only things I've had to fix have been owner error (wife hitting garage, driving over large ice chunks, etc).

General Comments:

Awesome car to drive - the V8 makes this really quick, and the handling is awesome.

Due to the sportiness and 19" wheels, you certainly don't feel like you are riding on a cloud however.

Technology galore! Cooled seats, voice guided menus, adaptive cruise, pre-crash restraints, lane departure, push button start... the list goes on.

I thought I wanted a BMW, but couldn't find the same combination of features and performance.

14 speaker audio system rocks.

Would you buy another car from this manufacturer? Yes

Review Date: 14th March, 2013

26th May 2013, 23:17

Drove one on delivery. Front end became very loose at 160km/h (100 mph); not good. Lumbar support poor on the seat, and a lot of road noise due to low profile tyres (turn up the radio). But goes like a cut cat (Kiwi saying). Very enjoyable.

2007 Infiniti M45 Sport 4.5 gas from North America


Fun to drive during the day


High beams are focused too high.

General Comments:

Everything that you have read about this car is true (it's great). It's hard to believe anyone being disappointed with the M45 Sport.

However if you drive this car on the highway at night, you need to know that the design of the headlights is faulty. The high beams are focused so high that they do not illuminate the road in front of the car at all. There is a single adjust for both high and low beam lights, so if you take your car to the dealer, they will misalign the low beam focus if you complain of the faulty high beams.

I drive 70 miles at night on a desert highway to work daily. If you drive your M45 in town this will not be an issue, but if safe night time driving is a concern to you, beware!

Would you buy another car from this manufacturer? Don't Know

Review Date: 13th June, 2007