* Left-hand drive (LHD): In most of the world, the driver sits on the left. Looking from the driver's seat, an engine on the left is a "left-side engine" and one on the right is a "right-side engine".
* Right-hand drive (RHD): In some countries (like the UK, Japan, Australia), the driver sits on the right. Again, the engine position is described from the driver's perspective. So, in a RHD car, an engine on the right is a "left-side engine" and one on the left is a "right-side engine".
The grill's position doesn't directly indicate engine placement. While the grill might *seem* to offer a clue, its position is often influenced by styling choices and doesn't reliably reflect engine position. Always use the driver's seat as your reference point.