GLe 250d Model buying Recommendation

I am looking for upgrading my car, I have used sedans before but never bought a SUV before, I am looking to buy the Mercedes 250d which I am getting it at a decent discount, I intend to own the vehicle for atleast 7 -8 years , should I wait for the new 2019 model or should I buy the existing model, the only reason for asking is I feel the Gle 250d lacks some important features like Apple Car Play,Electric Tail gate which are available in many low cost SUV’s