E10 Petrol with V6 and AMG I4

[Jonhklee]

Anyone got any expertise on E10 petrol and it’s effect on BHP and running in V6 and i4 AMG engines? For example, reliability and power delivery?

 

[TomE]

Here’s the official Lotus position on E5 and E10, which covers the V6: https://www.lotuscars.com/en-GB/fuel-compatibility/

For engines with forced induction like the supercharged V6, Lotus recommend super unleaded (97 RON or higher). You can use a lower rated fuel but the ECU will adjust accordingly and you’ll get lower performance. In the UK I think 97+ RON fuel is staying as E5.

Mercedes say all current AMG engines are E10 compatible but with a slight impact on fuel economy and performance, around 1%. They recommend super unleaded too, but will also run on regular unleaded with lower performance.