Will any of the Mercedes SUV's fit 3 car seats in the third row?

 

The third row in the gl only accommodates 2 passengers, so that wouldn't be possible. A different story if you utilize 2nd & 3rd row.

 

Sorry, typo. I meant to say 3 car seats in the second row.

 

There is no way 3 infant seats would fit, those seats are huge. You may be able to fit a booster seat between 2 infant car seats though. We have had 3 toddler type booster seats in the second row, although it was tight.

 

I need a booster for a 6 year old, and two infant seats that click into a base or stroller.

 

The size and shape of these seats are so variable, that your best bet would be to take them to the dealer to see how they would fit. I'm sure you wouldn't be the first to do that.

 

I found the sunshine kids seats the narrowest allowing 3 across the 2nd row of a GX 470.