Crash Test
Not Tested
Source NHTSA
MPG (up to)
17 -18 City / 24 -26 HWY
Horsepower
325
Seats
4
Front angle view.

Positive Owner Reviews

accountCircle Lusine S
The only problem that I have had with my car is the battery! Sometimes it worked wrong, so I changed it with the new one!
I bought my BMW in 2004. Since that time I use it for everything: go to College, to shopping, travel a lot, but it still works great!!! If you need a car for long use I recommend BMW! This car was, is and will the best in the world!
accountCircle Joey
Repairs will be needed
Ive had a 2005 BMW 645 convertible for 3 years. It's a good car but get ready to spend some money. This car definitely needs a oil catch can to prevent oil getting sucked into the air intake manifold. If not you'll get a check engine light for carbon build up on the valves. All German auto sells a tool kit to fix this but it's still a lotta work. You'll end up installing a new coolant pipe, pcv valves and it's a good time to put in new spark plugs. Definitely gonna have to change gaskets -all of them, valve covers, top timing chain covers, alternator bracket, oil pan. Hopefully the previous owner maintained the fluids or there's a good chance you'll be replacing the Megatronics unit in the transmission. Oh and definitely front control arm bushings, those things go out and the car jerks a lot. So if you got money to burn go for it.
accountCircle Jason F
The 6 series two door BMW car.
The 6 series was initially only available as a two door, however a convertible body style was later added with the introduction of BMW 6 series 2004. A new four door coupe body style was introduced in 2012 with the f06/f13 6 series, as a well as fastback body style with the g32 6 series.

Negative Owner Reviews

accountCircle Joey
Repairs will be needed
Ive had a 2005 BMW 645 convertible for 3 years. It's a good car but get ready to spend some money. This car definitely needs a oil catch can to prevent oil getting sucked into the air intake manifold. If not you'll get a check engine light for carbon build up on the valves. All German auto sells a tool kit to fix this but it's still a lotta work. You'll end up installing a new coolant pipe, pcv valves and it's a good time to put in new spark plugs. Definitely gonna have to change gaskets -all of them, valve covers, top timing chain covers, alternator bracket, oil pan. Hopefully the previous owner maintained the fluids or there's a good chance you'll be replacing the Megatronics unit in the transmission. Oh and definitely front control arm bushings, those things go out and the car jerks a lot. So if you got money to burn go for it.
accountCircle Jason F
The 6 series two door BMW car.
The 6 series was initially only available as a two door, however a convertible body style was later added with the introduction of BMW 6 series 2004. A new four door coupe body style was introduced in 2012 with the f06/f13 6 series, as a well as fastback body style with the g32 6 series.

BMW 6 Series Models

Models also known as Trim Levels, are used to identify a vehicle's level of equipment or special features.

car
645Ci
325 HP 21-21 MPG 4 Seats
Photos may not match model

2004 BMW 6 Series Owner Reviews

3.67
3 Reviews
close Write Review
5 stars 33%
4 stars 0%
3 stars 67%
2 stars 0%
1 star 0%
accountCircle Lusine S on September 8, 2020
The only problem that I have had with my car is the battery! Sometimes it worked wrong, so I changed it with the new one!
I bought my BMW in 2004. Since that time I use it for everything: go to College, to shopping, travel a lot, but it still works great!!! If you need a car for long use I recommend BMW! This car was, is and will the best in the world!
accountCircle Joey on July 2, 2020
Repairs will be needed
Ive had a 2005 BMW 645 convertible for 3 years. It's a good car but get ready to spend some money. This car definitely needs a oil catch can to prevent oil getting sucked into the air intake manifold. If not you'll get a check engine light for carbon build up on the valves. All German auto sells a tool kit to fix this but it's still a lotta work. You'll end up installing a new coolant pipe, pcv valves and it's a good time to put in new spark plugs. Definitely gonna have to change gaskets -all of them, valve covers, top timing chain covers, alternator bracket, oil pan. Hopefully the previous owner maintained the fluids or there's a good chance you'll be replacing the Megatronics unit in the transmission. Oh and definitely front control arm bushings, those things go out and the car jerks a lot. So if you got money to burn go for it.

Ranks #4 Luxury Large Cars by Owners

The 2004 BMW 6 Series has an average owner rating of 4.50 out of 5 which ranks it #4 of 7 other Luxury Large Cars.

1
car
4.85
2
Tie
car
4.5
4
car
3.67

Ranks #3 Luxury Large Cars by Fuel Economy

The 2004 BMW 6 Series has a combined MPG of 25 which ranks it #3 of 7 other Luxury Large Cars.

1
car
26 MPG
2
Tie
car
25 MPG
3
Tie
car
24 MPG

Related Articles for 2004 BMW 6 Series

From the Vehicle History blog

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BMW Oil Leak Recalls: Are The Rumors True?

Frequently Asked Questions

What's the 2004 bmw 645ci oil type?

Answer: The 2004 BMW 645Ci useS5W-30 SAE synthetic motor oil and takeS8.4 quarts of it, which includes what's used by the filter. If You want the highest possible OEM match, You can buy Liquimoly Special Tec LL, part...

Answers are provided by third parties. We do not guarantee accuracy of responses

Safety & Reliability

NHTSA Logo
NHTSA Crash Test
(Not Rated)
*National Highway Traffic Safety Administration
IIHS Logo
IIHS Crash Test
(Not Tested)
*Insurance Institute for Highway Safety