If you’re thinking of purchasing a 2017 Ford Fusion Sport—especially the 2.7L twin-turbo V6 with about 50,000 miles—you are not alone in being at least curious about its reliability. The good news? If you read the owners’ chatter on forums like r/fordfusion, the consensus is mostly positive, with some caveats

Highlights of the Discussion

Generally Strong Reliability for the Sport Trim

everal commenters insist the 2017–2019 Fusion Sport is actually the most reliable Fusion variant. One puts it succinctly:

“The ‘17-‘19 Sport is the most reliable Fusion, followed by the 2.5L and then the Hybrid.”

Owners report few major issues even at higher mileage:

“I bought mine at 48k miles. I’m at 104k now and all I’ve done are fluid changes, battery, and plugs. It needs brakes soon. I love it.”

Another:

“I got my ‘17 Fusion last fall at 57k miles, and since then I have no complaints at all. Great reliable car.”

The Importance of Maintenance
A recurring theme is that reliability depends on proper care. One user notes:

“Or… I’m one of the few that actually performed scheduled maintenance… I’ve known too many people that are complete idiots about a simple thing as an oil change.”

Another Sport owner with ~80k miles reports:

“No issues at all, and I do regular oil changes at 5k miles… No rattling, no shifting problems, no weird engine noises.”

Transmission Debates
There’s some disagreement about the transmission. One cautionary note:

“Watch the transmission. They’re probably the most unreliable part of these fusions.”

But others counter that the Sport’s transmission is better:

“The ‘17–‘19 Sport has an upgraded 6F35 so less problematic.”

“It has the 6F55 out of the Explorer… an upgraded 6F35 used in the SHO and Continental.”

Overall, most consider it an improvement over base-model Fusions.

Modding Warnings

One area of real risk? Aggressive modifications:

“They are fine but if you decide to mod it be careful… I know plenty of people who blew engines/turbos multiple times.”

Driving Experience and Enthusiasm

Owners love how it drives:

“It’s literally such a nice car! I absolutely love them! They are pretty damn fast and good looking.”

“Best Fusion by far.”

The AWD, twin-turbo V6 makes ~325 hp—a big upgrade over lesser trims.

Verdict: Should You Buy One?

If you’re in the market for a 2017 Fusion Sport and it has clean service documentation, it may easily be one of the best Fusion models Ford ever built. Good maintenance habits have proven to be the key to excellent reliability for many owners — even at mileage levels beyond 100,000.

Pros

• Powerful and fun to drive
• AWD traction
• Mostly upgraded transmission
• Generally reliable when maintained

Cons

• Be cautious if the previous owner skipped maintenance
• Modding heavily can risk the engine/turbos
• Transmission issues are rarer on the Sport but not impossible

Bottom line: For a stock 2017 Ford Fusion Sport in good condition with documented oil changes? It’s a solid, reliable choice. Just don’t treat it like a Mustang and crank the boost without proper supporting mods!