View Single Post
Old 01-03-2013, 08:08 AM
floydarogers's Avatar
floydarogers floydarogers is offline
Pedant and Curmudgeon
Location: Renton, WA
Join Date: Oct 2010
Posts: 5,401
Mein Auto: 335d, 328d, Toyota T100
Car and Driver comparison

Don't know if any of you subscribe to Car & Driver, but last month's issue (December) had an instrumented test of EPS vs. Traditional in a BMW-series. The 535xi still has hydraulic, while the 528xi (N20) has EPS, so they did some testing (about the only difference is that the 535xi has 143 lbs more weight on the front).

"After griping about EPS for years, the shocking revelation is that C/D's editorial staff preferred BMW's electric system over its hydraulic assistance. Total votes in 7 of 10 (subjective) categories favored EPS by 2 to 8 points each. Hydraulic shined in only the 3 feedback categories where it won the on-center by 4 points and tied with EPS in our middle-of-maneuver and at-cornering-extremes performance ratings."

Later, they note that Hydraulic effort rises quicker when going off-center. Also, the article notes that almost 60% cars come with EPS now, up from 25% in 2005.

Unfortunately, C/D seems to have changed their website and you can no longer search old issues, or link to articles. (Perhaps it's just a bit soon; the January issue just came out.)
Reply With Quote