1989 mercedes 300te. opinions, please!

If your budget is $4000, that won’t buy a Pilot that you would want to own. I mention this because you offered a price for the Benz. You can buy a newer Mercedes, but just be aware that it will have to be several years older than a Pilot to match the price. That means age and mileage related maintenance and repairs will happen sooner on the Benz.