Problems
In at least the US market, the N54 engine has been characterized by a very large number of High Pressure Fuel Pump (HPFP) failures, leading to many BMW NA vehicle Lemon Law "buy backs" and reduced customer goodwill. On some engines the HPFP was replaced four times within the first few years of service.[citation needed] BMW has instituted a 10-year, 120,000-mile (190,000 km) warranty on the part, but only for 2007, 2008 and 2009 model year vehicles with the N54 engine. Other model years, to include 2009 models, continue to report HPFP failures.[16] As of late 2009, the low pressure fuel sensor has become suspected of causing some premature failures of the HPFP by engine tuners such as AMS and CP-E.
BMW tried to engineer a newer HPFP solution to eliminate HPFP issues users were having. The first 335/135s came out with 1351 7 537 320 HPFP followed shortly by 1351 7 585 655 HPFP and 2009 model had 1351 7 592 881 HPFP followed by 1351 7 596 123 HPFP. These pumps were updated and replaced again due to the high rate of failure with 1351 7 594 943 HPFP. But these also started to fail and got updated and replaced in May 2010 with a brand-new re-manufactured pump 1351 7 613 933 HPFP.[25] On the 26th of October, 2010, immediately following an ABC News story about HPFP failures,[26] BMW announced a recall of vehicles with the pump in question from manufacturing years 2007-2010.[27] A class action suit has been filed against BMW regarding these problems. [17]

Shell V-Power 是唯一一个没有Ethanol的汽油
Ethanol is very dry, it kills the rubber sealing rings in your fuel lines.
以前有铅汽油对油路有润滑作用,现在越来越干了