Thanks! I may be hauling six people more regularly, so the Discovery will fit nicely I think.
If you are talking about kids or the elderly, I'm going to give you advice that you will hate, but then love if you actually follow it.
Get a minivan. Surrender your panache or any hope for coolness again, and get the right tool for the job. Make sure there is sliding door on each side, and roof mount folding HDTV for passengers. Extra points for easy to clean features and bench seating.
I know it's not 'cool'. And the Land Rover has at least a little fashion sense. But the minivan is the Swiss Army Knife of kidmobiles. It is engineered for that purpose, an SUV or sedan is not, and it shows everyday.
There is only 1 plug-in which is the Chrysler Pacifica. Highly rated. Wake up each AM with at 33 miles of EPA AER range UNLESS you floor it, then it still gets better mileage than most SUV/CUVs/Crossovers.
My wife HATED being seen in a minivan, even the Silhouettes, which was about the most luxurious and 'less hideous'. But damn that thing rocked when it came to moving kids, strollers, and groceries. It worked so well, when the first one got thrashed enough, she bought another exactly like it down to the color, but with newer tech.
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SUV or Sedan?
If I had to get a 7/8 passenger SUV, I'd test drive a few. And I'd take a good inventory about what I now and in the future will be using it for. It would be the Tahoe/Suburban 7/8 seat with with 420HP NA V8 with 10 speed automatic. The difference in the Suburban has more cargo room with 7/9 adults inside due to it's long wheel base but does not get the 420HP option, just 355HP. The GMs seem to be the most serious SUVs, they have 6 versions of the heavy duty ones.
GM foodchain:
Standard wheelbase: Tahoe, Yukon, Escalade
Long wheelbase: Suburban (seats up to 9), Yukon XL, Escalade ESV
Regardless of brochure information, all are towing vehicles starting with the frame. They are full-size very rugged pickups in their other life. People tow twice the rated weight with them sometimes. I do not suggest it, but if you going to tow 10,000 or more with bumper hitch, it would be the Yukon XL Denali with the 6.2L 420HP engine. Buttery smooth, power everywhere. It's a tow king when it comes to SUVs can be ordered with extra large Brembo brakes, not that the factory brakes aren't huge. These are just 84% more pad and 42% percent more rotor.
The 420HP motor is not just quick for a beast, it really shines when towing. It has passing power towing a car trailer, that some sedans don't have unladen. Seriously. It will tow a Prius and trailer quicker and faster while passing than the Prius could move under it's own power. By a lot. The drivetrain was engineered for safety, and quick passing is safer passing. Towing max weight+ at the speed limit+ up the steepest grades is safer than hanging out in the all-trucks lane where the 90 mph BMW drivers are doing their passing between 25mph semi-trucks.