BMW E53 X5 3.0i Fuel Economy Capabilities

[jdsilvaca]

That's awesome. We have a 2002 X5 3.0 automatic and average about 25mpg on our trips from southern california to Napa CA.

cheers

[kineticsphd]

Remember that extreme fuel top-offs can cause trouble with the sensors in the evaporation systems.

[JDM-20L]

The best I've done in my 3.0D is 1000kms in one tank (625 Miles) that is breaking it up (about 250kms city & 750kms highway)

that mileage is damn impressive for a gasoline burner!

[Ricky Bobby]

**Bumping this thread - On my 3.0 5MT, I run Shell 93 octane, NGK plugs were changed about 2 years ago (non iridiums), original coils, injectors, etc, and I add Lucas UCL every tank - Rotella T6 5w-40 oil just changed and used for last few years.

I'm going to have to increase my tire pressures a bit since they are a bit low, and I'll admit my driving recently is about 60/40 highway/city and on the highway we are cruising at 75 mph or so, but my last few tanks have been noticeably lower in trip mileage.

I've gotten approx 370-385 miles to the last few tanks, usually it easily gets 400+, right around 420-430. I'll increase tire pressures to 35 (I do have the heavier 20" wheels), and report back.

DISA is rebuilt
No vaccuum leaks
AFE pro dry S filter has 10k miles on it since last cleaning (intake)
New fuel filter (Mahle) waiting to be installed on my workbench
Coolant Test OBC 7 is showing 88C-90C driving, up to 95C at idle or slow speeds
Conforti Shark Injector going to be loaded up onto the DME this weekend as well

Anything else I'm missing from a mileage standpoint? Perhaps Iridium plugs, Vanos seals?

[upallnight]

Originally Posted by Ricky Bobby

**Bumping this thread - On my 3.0 5MT, I run Shell 93 octane, NGK plugs were changed about 2 years ago (non iridiums), original coils, injectors, etc, and I add Lucas UCL every tank - Rotella T6 5w-40 oil just changed and used for last few years.

I'm going to have to increase my tire pressures a bit since they are a bit low, and I'll admit my driving recently is about 60/40 highway/city and on the highway we are cruising at 75 mph or so, but my last few tanks have been noticeably lower in trip mileage.

I've gotten approx 370-385 miles to the last few tanks, usually it easily gets 400+, right around 420-430. I'll increase tire pressures to 35 (I do have the heavier 20" wheels), and report back.

DISA is rebuilt
No vaccuum leaks
AFE pro dry S filter has 10k miles on it since last cleaning (intake)
New fuel filter (Mahle) waiting to be installed on my workbench
Coolant Test OBC 7 is showing 88C-90C driving, up to 95C at idle or slow speeds
Conforti Shark Injector going to be loaded up onto the DME this weekend as well

Anything else I'm missing from a mileage standpoint? Perhaps Iridium plugs, Vanos seals?

Leave the Jersey shore and move to Miami.

[tecboy99]

Originally Posted by Ricky Bobby

**Bumping this thread - On my 3.0 5MT, I run Shell 93 octane, NGK plugs were changed about 2 years ago (non iridiums), original coils, injectors, etc, and I add Lucas UCL every tank - Rotella T6 5w-40 oil just changed and used for last few years.

I'm going to have to increase my tire pressures a bit since they are a bit low, and I'll admit my driving recently is about 60/40 highway/city and on the highway we are cruising at 75 mph or so, but my last few tanks have been noticeably lower in trip mileage.

I've gotten approx 370-385 miles to the last few tanks, usually it easily gets 400+, right around 420-430. I'll increase tire pressures to 35 (I do have the heavier 20" wheels), and report back.

DISA is rebuilt
No vaccuum leaks
AFE pro dry S filter has 10k miles on it since last cleaning (intake)
New fuel filter (Mahle) waiting to be installed on my workbench
Coolant Test OBC 7 is showing 88C-90C driving, up to 95C at idle or slow speeds
Conforti Shark Injector going to be loaded up onto the DME this weekend as well

Anything else I'm missing from a mileage standpoint? Perhaps Iridium plugs, Vanos seals?

You and I both want those 3.64 diffs.

[Green Dragon]

Originally Posted by tecboy99

You and I both want those 3.64 diffs.

Yes you do! Love my diff swap.

[tecboy99]

Originally Posted by Green Dragon

Yes you do! Love my diff swap.

Okay, I gotta know. How's 1st? and 6th? right now, 75 is roughly 3K. I was curious to know how much of a difference the 3.64's would have. Fuel economy?

[Ricky Bobby]

:LOLOLOLOLOL:

[srmmmm]

I've registered as high as 26.2 mpg on the trip computer running an indicated 70 mph, but only on days when the ambient temperature was over 100 degrees! Our long distance trips usually come in at 21-22 mpg since I traditionally encounter a headwind no matter what direction I'm driving... I have to admit I'm really looking forward to the first trip in the CEO's 428i though. She's averaging over 25mpg with 70% city driving.

2002 X5 3.0 (Automatic) 291,800 miles
2014 428i 13,000 miles

2004 325i sold at 123,600 miles
2001 325i sold at 66,000 miles