That means you get to the showroom, and say to the salesman: "No, I don't need the blind-spot-rear-entretaining-massaging-adaptive-steering-guided-22-inch-cruise-controled-cupholders. The base car is exactly what I want."
My take is the Volkswagen Golf MK7. Because no other car in its base form and at this price point feels as good as this. It may be on the inside, driving dynamics, sensation of solidity, but I would be perfectly fine with it as a base model.
So tell me, what car would you buy absolutely base?
(Try to avoid a 458 Italia, or an AMG or something saying you wouldn't add a single option to them.)