How do I fit three car seats across one row?

It depends on the vehicle's interior width and the specific car seats you use, so test before you buy. Look for vehicles with a wide second row or a bench rather than captain's chairs, and check how many seating positions have LATCH anchors or top tethers. Narrow car-seat models can help. IIHS publishes LATCH ease-of-use ratings, and many local fire stations or certified technicians can check installs. Bring your actual seats to the test drive.