Lewis Hamilton accused of not being 'as mature' as George Russell by ex-Mercedes engineer
![Lewis Hamilton accused of not being 'as mature' as George Russell by ex-Mercedes engineer](https://i2-prod.irishmirror.ie/incoming/article33501430.ece/ALTERNATES/s615/1_GettyImages-2162761059.jpg)
Lewis Hamilton is in his last season at Mercedes where he currently partners fellow Brit George Russell and the seven-time F1 champion was branded 'not as mature' as his team-mate