2015 Porsche 911: A 7-Speed Manual, Naturally Aspirated Flat-Six, and 15,000 Miles

Manual transmission 911s are becoming an endangered species, and this 2015 Porsche 911 might be the best argument yet for why that matters. It's a naturally aspirated, 400-horsepower flat-six paired with a proper 7-speed manual gearbox, wrapped in a Sport Design package with just 15,000 miles on the clock. Cars like this — well-optioned, well-documented, and stick-shift — are getting harder to find every year, and the market is starting to reflect that.

Here's a full look at what makes this particular 991.1 stand out, and why manual naturally aspirated 911s are quietly becoming some of the most talked-about cars in the collector world.

1. Sport Design Package: More Than Just Looks

This car is optioned with the Sport Design package, which swaps in a unique front bumper, different mirrors, and — the star of the show — a ducktail-style spoiler. It's a small detail on paper, but it changes the entire read of the car from the rear three-quarter view. It's the kind of factory option that photographs beautifully and instantly signals this isn't a base-spec car.

2. Sport Techno Wheels with a Custom Twist

The car rolls on Sport Techno wheels finished with painted black centers, rather than the standard silver finish. It's a subtle customization, but it's exactly the kind of detail that separates a thoughtfully speced 911 from one that was simply optioned for options' sake.

3. Naturally Aspirated 400-Horsepower Flat-Six

This is one of the last generations of 911 to run a naturally aspirated flat-six before Porsche shifted to turbocharged engines across the lineup. At 400 horsepower with no turbo lag and a linear power delivery all the way to redline, this engine represents a driving character that Porsche has largely moved away from since. For a lot of enthusiasts, that alone makes naturally aspirated 991.1 models worth seeking out.

4. The 7-Speed Manual: A Genuine Premium

Manual transmission 911s command a real premium in today's market, and this car is no exception. It's simply supply and demand — manual take rates on 911s dropped significantly in this era, and demand for stick-shift cars has only grown since as PDK became the default choice for most buyers. If a true manual driving experience matters to you, this is one of the increasingly rare cars that still delivers it.

5. Interior Details: Leather, 14-Way Sport Seats, and Red Gauges

Inside, the car features a full leather interior, a multi-function steering wheel, and 14-way adjustable sport seats for a snug, supportive driving position. The Premium package adds heated seats, and red gauge faces give the cabin a distinctive, purposeful look. Sport Chrono is also included, rounding out a genuinely well-equipped interior.

6. A Full Soul Performance Exhaust

This particular car didn't come from the factory with a sport exhaust — but a previous owner had a full Soul Performance exhaust system installed, and the result is exceptional. It arguably sounds better than the factory sport exhaust option, or at the very least, noticeably louder and more aggressive. For a naturally aspirated flat-six, that's not a small upgrade — exhaust note is a huge part of what makes these engines special, and Soul Performance systems are well regarded in the Porsche community for good reason.

7. Meticulous Documentation and Protection

The car carries a clean CarFax and clean AutoCheck report, with no paintwork and a clean rev-range report on file. It's protected with full frontal paint protection film, along with high-impact PPF along the rockers, door jambs, and rear of the car — the areas most prone to chips and scuffs in daily use.

8. Recently Serviced and Ready to Drive

Maintenance is fully up to date: a complete 40,000-mile service was recently performed, including plugs, fluids, filters, belt, and a transmission service. New Michelin Pilot Sport tires have been fitted all around. In short, this car needs nothing except a new owner — no deferred maintenance, no pending to-do list.

9. Why Manual, Naturally Aspirated 911s Might Be the Next 993

Among people who work with these cars every day, there's a growing belief that naturally aspirated, manual 991.1 models could follow the same trajectory as the air-cooled 993 — the last of its kind before a major engineering shift, and now one of the most sought-after 911 generations among collectors. Nobody can say for certain that history will repeat itself. But consider this: a 993 from its final year or two of production, in a comparable spec and mileage, now trades well north of $4 million. Whether the naturally aspirated 991.1 follows a similar path is something only time — and the market — will decide.

10. Why You Need to Experience This Car in Person

Photos and spec sheets can tell you the numbers, but they can't convey what a naturally aspirated flat-six sounds like through a Soul Performance exhaust, or how a well-sorted 7-speed manual feels rowing through the gears. This is a car that needs to be seen, heard, and driven to be fully appreciated.

Frequently Asked Questions

Come See and Drive This Manual 991.1

Well-optioned, low-mileage, naturally aspirated manual 911s like this one don't stay available for long. If you want to see it, hear that Soul Performance exhaust in person, and get behind the wheel, contact us today to schedule a visit. Looking for something else? Browse our full pre-owned inventory, or if your current European vehicle needs dealer-level service without the dealership price tag, visit our home page to learn more about our repair and maintenance services in Prospect, CT.