2019 BMW X3 M review: Hero SUVs driven!

Finally, at last, BMW's powerhouse X5 M and X6 M monsters have been joined by the new and slightly more accessible mid-sized X3 M and X4 M. Are they up to the standard set by models like the Mercedes-AMG GLC63 twins, or the Jaguar F-Pace SVR and Alfa Romeo Stelvio Quadrifoglio? Alborz Fallah finds out.