Buy or not to buy Mazda MX-5 test drive

Good day I looked at a MX-5 NB with 80,000 Km built in 2002 for 4000€ at a dealer, I examined it closely and tested it. It came out that after very little performance it occurred to me at 1.1 tons and 110 hp. Not even in the upper thresher range there was really something to feel, it felt rather like a small car with 70-85 hp. I didn’t think about the specified 9-10 sec, then tested it immediately on the highway and from 170 Km/h (GPS measured) it went slowly ahead, after that I had to slow down. What do you think, every MX-5 NB is driving like this? Besides, the gap measurements are not quite right at the front of the bonnet. Furthermore, he already has 4 previous owners, your opinion? Otherwise everything, hardly rust, engine is dry, steering is standing straight and without a game, 1 year warranty and dealer is almost on the doorstep. Unfortunately I did not come to the other test drive, and the purchase decision must now If he falls quickly, he’s probably gone. What do you think I should leave my fingers off it or buy it?