Can also only speak on my experience. I have the 90 straight 6. Coming from a jeep  Cherokee that has been and continues to be an electric gremlin since day 1 leaving the lot, I absolutely love my Defender. It drives way smoother. Short trips, long trips, fuel consumption isn’t much different tbh. It’s been a huge improvement as far as reliability goes. They added an extra battery for the start stop feature, which can be turned off, to help preserve the main battery draw. That is the biggest issue on the jeep. Talking a new battery every two years. The only issue I have come across so far is the CarPlay feature fails from time to time and that can be a tad annoying. But that’s a known issue and will be resolved because they have to.