Last post on May 01, 2013 at 3:12 PM
You are in the BMW 5-Series
What is this discussion about?
Lexus GS 430, Acura RL, BMW 5 Series, Volvo S80, Audi A6, Infiniti M35, Infiniti M45, Mercedes-Benz E-Class, Cadillac STS, Sedan
#10281 of 10338 Re: Looking for used Luxury Sedan [houdini1]
Jul 02, 2012 (3:21 pm)
You might want to test drive a lotus....makes you think about 4 cylinder cars a bit differently
#10282 of 10338 Re: Looking for used Luxury Sedan [houdini1]
Jul 02, 2012 (5:56 pm)
Maybe BMW is trying to meet mpg goals?
Oh, absolutely. That's why everyone is scaling down and adding turbos.
Interestingly, I don't find my twin-turbo BMW I6 to be any smoother than my VW 2.0T was.
#10283 of 10338 Re: Looking for used Luxury Sedan [houdini1]
Jul 03, 2012 (6:23 pm)
Certainly...BMW makes both 6 and 8-cylinder versions of the 5-series, as well as the 3 and 7 series. So, you get to determine the amount of power you want available. But, with the turbocharger making so much torque at low RPM's (and it is torque that gets you moving), it makes most of the other engines look like porkers off the line. The BMW make max torque at around 1200rpm. Do you know where the Acura needs to turn to achieve its max torque? That's what allows it to go up a hill without downshifting, not Hp. That's what allows it to accellerate at low rpm, not Hp. And, with all that torque, it can cruise at really low rpm, saving fuel and lowering noise. How fast is your engine turning at 80mph? The BMW (6) turns less than 2K. That saves wear and tear and makes for a much more comfortable cruise.
#10284 of 10338 BMW twin turbo 4 Re: Looking for used Luxury Sedan [michael0137]
Jul 05, 2012 (6:18 am)
'now BMW has a twin turbocharged 4??? '
Actually the new BMW 4 has a single 'twin-scroll' turbo charger.
'At 240 bhp, the 528iís 2.0-liter inline-4 with a twin-scroll turbo'
- from R&T
#10285 of 10338 Re: Looking for used Luxury Sedan [james27]
Jul 05, 2012 (2:22 pm)
How about the non turbo in-line 6? Has it gone away?
#10286 of 10338 Re: Looking for used Luxury Sedan [houdini1]
Jul 05, 2012 (7:30 pm)
I think so, but not sure (at least in the USA). The EPA rules require some significant fleet fuel economy increases, and smaller is better. But to retain the same power, turbochargers are being added. The new 4 has more power AND torque than the I-6 it replaces and gets significantly better mileage. Things will continue to get tighter and tighter, and you'll see more tweaks to improve economy whether we like it or not.
Many of the engines have what they call twin-scroll turbo, but it is just one turbo (while some models do have multiple actual turbochargers). There's a valve that adjusts to bring the turbo up to speed quicker so it can add power at much lower engine rpm than a typical single unit. This is less complicated than using multiple real turbos where often, one was smaller to get up to speed quicker, but the other one was larger to provide max boost at higher engine speeds. The timing on that type is messier, and you can have a hole in the middle of the power band. Things are much more linear with the twin-scroll design.
#10287 of 10338 E63-worth it?
Jul 15, 2012 (7:53 am)
If this needs to be a separate thread, just let me know. Currently own a 2011 MB E350; I like the car very much, but would like to have a bit more power. Have a chance to purchase a 2011 E63; I've read everyting I can on this vehicle, taken a test drive, etc, but was seeking some advice from owners. It's a lot more money-is it worth it? I really liked the car, but any and all advice is appreciated.
#10288 of 10338 Re: E63-worth it? [txsco]
Jul 15, 2012 (8:03 am)
Frankly....like any car, it's worth it if you believe it is. It's your money.....your choice. Good luck!
#10289 of 10338 Re: E63-worth it? [graphicguy]
Jul 15, 2012 (11:38 am)
Good point; I guess I should have been more specific. Does anyone have any short or long term experience owning/driving an E63? I'm leaning toward buying the car-would like the power-but am given pause-ok, only a bit-as I haven't owned a RWD car in 25 years.
So what's the driving experience like?
#10290 of 10338 Used 5 series transmission
Mar 13, 2013 (9:23 am)
Was researching 2011 2012 5 series. Read a lot about the transmission problems in the 2011 model. Has anyone had any problems with the 2012 model? Also, if the car learns how the driver drives and the transmission adjusts for it, how does it work out when buying a used car? Thanks in advance for any help.