I've made a google map with the LEZ boundaries visible
No idea if this is useful to anyone or not. My car isn't that old but it's diesel and not LEZ compliant.
https://www.google.com/maps/d/u/1/edit?mid=18Qfzn8aQe5Mg3bQT8m3IyKmGsrbkBmk&usp=sharing
I made this in google maps. You can click the link and it will open up. Works ok on desktop (takes you to the google my maps version) but works well on phones too. Feel free to bookmark and use.
PLEASE NOTE: this will NOT cause google maps to change navigation. It's purely a visual aid. It will still try and plot a route right through the LEZ but at least with a visual aid you can avoid it as long as you're paying attention :-)
Thanks all.
Mods, please delete if not appropriate.
Screenshot:
