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E60 M5 (2006 - 2010)

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Old 09-25-2008, 10:58 PM
SpookyJohn SpookyJohn is offline
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Mein Auto: 2006 550i - SMG!
M5 vs 545i/550i

Hello, I am brand new here and looking to upgrade my driving experience. I'm currently driving an older MB C280 and when I started driving cars nothing 'wowed' me until I drove the V-8 5er. Right now I'm looking for a 545i/550i with the SMG tranny. I drove it on an M3 and decided I can't live without it; absolutely love that transmission.

If I get a 545i/550i I'll upgrade the intake, exhaust, & Dinan Chip to add 25-30 hp. Well, when looking at the cars, here's what I'm seeing:

545i - $25k-ish + $3k in upgrades = 350 hp @ 28 hwy mpg
550i - $35k-ish + $3k in upgrades = 390 hp @ 25 hwy mpg

M5 - $45k-ish = 500 hp @ 18 hwy mpg?

Obviously, the 545i/550i cars report less mpg, but this is what I'm seeing reported in real life. The M5 reports 15-18mpg on the hwy, but I haven't seen any real world hwy mpg numbers. Has anyone seen any?

Oh yeah, before I get the 'buy a prius' line let me just say that I could afford the gas, but am wondering if it actually gets 20+ mpg on the hwy. What I'm seeing is a loss of 110 hp (20%-ish) giving almost 40% better gas mileage.

I already have a few car I'm just about ready to pull the trigger on.

Forgive me for thinking like an engineer and performing a cost/benefit analysis. The wildcard to the CBI is the fact that I believe we are entering the second ending of the great automobile (equivalent to the gas crunch in the 70s) and believe it would be worth it to drive one of the greatest cars ever. But is it THAT MUCH better than a 550i (I don't have a M5 close by to drive)?
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  #2  
Old 09-26-2008, 07:38 AM
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von_zoom von_zoom is offline
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I have a 550i which gets around 17-18 in town, and mid 20s (or sightly higher) on the road with no problem. As you no doubt are aware, MPG is directly related to how you drive with attention to the right foot. My 750i gets about the same results, but I have to be careful with quick starts, etc. Now, the 2008 M5 is an intirely different animal. I drove one for about 2 months, and I could not get over 12 around town, (single didgit numbers are not uncommon if you enjoy the true quickness on the car) and 18-19 on the road was pushing the numbers, and that was the reason I did not buy one. It was not the cost of gas associated with the low mileage, but the limited range the car will go between filling station visits. I had to be mindful of running out of gas during a trip. All in all, unless you are status minded, the 550i will give you all the get up and go you need for normal city or highway driving. Even more impressive, track it at a HPDE event, and it will hold its own against any M5. What ever you decide, with either car, no doubt, you will be pleased. Good luck.
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Last edited by von_zoom; 09-26-2008 at 07:42 AM.
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Old 09-27-2008, 05:05 AM
carlsturm carlsturm is offline
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if MPG is your buying criteria then don't buy an M5. if driving excitement is your buying criteria then buy an M5.
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Old 09-27-2008, 07:20 AM
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mustaine mustaine is offline
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Valid points above.

Please add this to your equation, if your cummute is mainly city driving ..... then M5 is too much of a car. IMO.

In Stop and go traffic, M5 is not at a happy car.
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Last edited by mustaine; 09-27-2008 at 07:23 AM.
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Old 09-27-2008, 12:28 PM
SpookyJohn SpookyJohn is offline
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Mein Auto: 2006 550i - SMG!
All valid points above, thanks for the input. Its all pretty much what I figured. My commute is pretty much a six mile trip on a county highway. I wouldn't be able to open it up too much, but its not stop and go. Its also the range I'm concerned with, between heading back to Texas, trips to NOLA, and rugby trips this car will need to travel.

Does anyone know if there are any quality extended warranties to be had on the M5? I notice that BMW doesn't even CPO these, and I've been unsuccessful getting a quote on an extended warranty.

Thanks!

Last edited by SpookyJohn; 09-27-2008 at 12:31 PM.
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Old 09-30-2008, 07:18 AM
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mustaine mustaine is offline
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Quote:
Originally Posted by SpookyJohn View Post
I'm concerned with, between heading back to Texas, trips to NOLA, and rugby trips this car will need to travel.

Does anyone know if there are any quality extended warranties to be had on the M5? I notice that BMW doesn't even CPO these, and I've been unsuccessful getting a quote on an extended warranty.

Thanks!
If travel is that much of an issue then I would vote for 550, not that M5 is not good candidate for travel.

In our scenario, we always jump into our 745 whenever there's an opportunity to travel. It's amazingly comfortable for those long drives.

545/550 with a sports package is an amazing car..... very smooth and linear delivery across the board whereas M5 is a high revving beast with tons of punch.

M5 is usually driven by my wife to work and then I bring it alive on the weekends.

I did check on extended warranty for our M5 in case we decide to keep it after warranty even though we are good on it until October 2011.

Here are the numbers.

Vehicle: 2007 BMW M5
Mileage: 7,000

First Warranty Group Platinum Exclusionary Bumper to Bumper Plan
Term/Miles: 6 more years / 100,000 total miles
Plan price: $ 4135
Deductible: $ 100

Optional payment plan:
$ 450 down payment
$ 204.72 for up to 18 months with 0% (no interest, fees, or pre-payment penalties)
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Last edited by mustaine; 10-01-2008 at 05:20 AM.
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