Per the article, the SUV was a "2017 Acura MDX."

According to fueleconomy.gov, that model has both "Hybrid" and non-Hybrid options available. At this point, both get more than 25 mpg highway, and about 20 city driving.

By way of comparison, if she worked in a job that didn't involve other people so much she might drive a Toyota Camry (the ultimate "mom car"). In which case her mileage (I assume she buys the V6) would be 30/21 mpg.

Since she works in DC and represents Philly, the only time she sees highway numbers are when she's commuting back and forth (which I assume she does - flying would make zero sense). She's on the Judiciary committee, so she may not have much to say about carbon footprints. On the other hand, there might be a quick federal law passed increasing the penalties for carjacking - those guys might have fucked with the wrong woman, unless they go for a quick plea bargain.