Dealer service tips......stay away from "volume" dealers service. They go through Techs like water, work is shoddy because service is also a "volume" business. Look for an older established dealer, they are still in business because they have repeat customers. Ford Customer Care had been outstanding for me for issues other than Service as my '16 has not required any. Ford has bet the house on Ecoboost Engines and Sync 3. Saw a big news article on the Ford WiFi updates being the first car maker to use it. The Ecoboost family is proving themselves to be rugged and reliable. Only Ford had the balls to put a V6 Ecoboost in a $400,000 GT and win LeMans. The point is Ford wants you to be happy, that seldom filters down to the Tech or Service people. Ford even has employees on our Forum to assist ST owners with issues. My ST is the first new Ford since 1979, and the car and attitude of Ford is so much better. Do not judge Ford by the dealer's actions. The dealership in an independant business that agrees to Ford's terms to sell and maintain your car. But dealers are not Ford employees, Techs' are not Ford employees.
In a nutshell if you enjoy driving you will love the ST, mine has the Mountune MP215 installed for a warranty covered mild tune (215 Hp now). Only Ford offers you a tune with your factory warranty. If you want to go with a whole hog performance build it is not for you. There are better options for all out performance if keeping a warranty is not a concern.
The car is light and with 197-215 HP, locomotive like torque and handling that is outstanding the FiST is a smile generating machine. Add in the $20-24K prices and it is a winner and has been declare top in class all over the world. As an OP stated it is a small car as a people carrier, but as a DD for most people that do not haul more than 2 adults and a kid or two and it is perfect. Gas mileage is excellent to me, 36-38 on the hwy and 30-32 in town. Make sure you do an Oil Catch Can for the DI engine's valves. You will find Sync3 is a very good interface, Audio is good and performance parts are numerous but stick to major companies and check the posts to weed out the not so good vendors. I have 12K on my '16 and never any hint of a problem other than a junk aftermarket intake hose and adapter that I finally got my money back on. I should have done some checking on the company before sending money. Also tons of mod advice on the Forum. I am 65 and have owned and modified some awesome cars in my life........but none delivered the smiles per gallon the Fist does. This is the car you take the long way home in!
Dislikes..... I did not like the leather shift knob, changed to a smooth ball type. Nor the red ST badges, changed mine to Yellow on my white car. Did not like the Recaros', I have had them before but they were real Recaros' not these that are made for the ST, they are tiny and lack the adjustability of a real Recaro. Neither myself nor my wife with liked them in the FiST or FoST's. Had them in my Mustang and BMW but they were nothing like the ones in the FiST. Wheel bolt circle is rather unique as are tire sizes and limits options to change the wheels or get a wide variety of stock size tires. Exhaust is much too quiet for me but lots of options out there.
Likes....love the car, OTD TT&L was $20K w/paint and Moonroof only options. Add $2K for Mountune MP215, new exhaust and an under seat sub woofer and my car is perfect for me. I don't autoX it nor track it. Its performance is utilized in straightening out curvy mountain roads.....often. E. TN and W. NC have some of the absolute best FiST roads in the country and I wear them out when I can. Wonderful road car, did 4500 mile camping trip and love the car. Back seats down it swallowed 2 weeks worth of food and drinks and all the camping gear and clothes. It returned me a trip average MPG of 35.7 MPG and many miles were cruising at a legal 80 MPH and the rest was mainly small two lane backroads.
The only thing keeping me from calling the car perfect is the fact Ford wants me to actually pay for it, what nerve!