Printable View
As low emission zones increase it may be more difficult to drive around in our cars . Some time ago I read an article in the Autocar about getting an emission test to prove compliance with Euro5 . Then registering with TFL . Anyone have any idea if that’s possible . My internet searching has not left me any wiser .
Nick
I have successufully done this with Euro 3 car that has NOx value lower than Euro 4 - seems that is all tfl cares about. I found this thread as was looking to see if the NSX could be the same, clearly an 04 NSX 3.2 is compliant, so I wonder if we could get the NOx values for the NA1. I'm not sure on this but I think tfl would prob require at least a Euro 3 that has NOx euro 4 value, so not sure older NSXs would be considered Euro anything?
One of the unique things about the NSX was that it meet and exceeded Californias smog test, so it wouldn't surprise me if it passed euro 4 values.
There is chat about this on pistonheads as apparently there is a differance between the Birmingham scheme and the London scheme.
Some more information on the required EURO emission standards upon registration/homologation (with limits) can be found here: https://en.wikipedia.org/wiki/Europe...passenger_cars
EURO 1 became mandatory for initial registration on 1st January 1993, EURO 2 in January 1997, EURO 3 in 2001 and EURO 4 in 2006. Homologation limits are one year less (1992, 1996, 2000 and 2005).
EURO 2 should be possible (maybe changes in software?) since the engines up to 1997 were not changed significantly. My 1997 JDM NSX is registered as EURO 2, for example. The EURO 2 standard requires a shorter warm-up period and many cars with lambda controlled cat and low enough exhaust emissions were retro fit with a cold idle increase mechanism to achieve EURO 2 - Honda sold these for certain models.
EURO 3 introduced NOx limits. The NSX engines were equipped with exhaust gas recirculation (EGR) at some point (don't know exactly) which is a way to reduce combustion chamber temperature and therefore NOx emission. The switch to EURO 3 (or 4, or both) could be related to this change but it's just an educated guess of mine ..
So my December 1999 LEV-status NSX is Euro 3, if I understand this right, and Euro 4 is what killed off the C32B NA2 & C30A NA1 (auto), as they couldn't be modified enough?