Green credentials
* Subtle styling changes * Greener and leaner than ever * On sale October...
![Green credentials](https://media.whatcar.com/fit-in/760x503/migration/articles/1259910455317.jpg)
Green credentials
More significantly, the revised S-Class is easier on the planet thanks to engine tweaks and low-rolling-resistance tyres.
The S320 CDI (actually a 3.0-litre diesel) has taken the biggest step forward, because it gets Merc's full Blue Efficiency treatment, which includes aerodynamic aids and an automatic gearbox that decouples when you come to a stop. Average fuel economy rises from 34.0mpg to 37.2mpg, while CO2 emissions fall by enough to drop it five company car tax bands.
![New MG 4 vs New Renault Megane E-Tech vs Cupra Born triple header](https://media.whatcar.com/370x245/wc-image/2022-11/header.jpg)
Best small electric cars 2024 - the top 10, plus one to avoid
Think going electric has to be expensive? Well, the best small EVs prove otherwise, but which models are we talking about, and which one should you avoid at all costs?