My bought new (now with 12,000 mile) Santa Fe gets gas fumes in the cabin. This began after the first routine maintenance at 6000 miles. I first noticed it when I would accelerate up a steep hill. I took it to dealership = "nothing is wrong". It worsened and was happening on flat roads as well. It was always intermittent but reliably present going steeply up with acceleration. Took it in for the second time. The mechanic didn't find a problem but he did notice the title cover that closes over where the fuel line and engine join was in the upright position. He pushed it down into place. We asked him to ride with us when we picked it up and that is when he told us about the latch thing. We left and had no funmes for a week. Today "in the uphill acceleration" it did it again. I have placed a complaint with Hyundai asking to get this fixed. I really need to know if anyone else has had this happen to them? I need it fixed...I have to open the windows to get the fumes out.