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The 2027 Corvette Grand Sport produces 535 hp from a 6.7L naturally aspirated V8, edging the 911 Carrera GTS by 3 hp. The Corvette runs a pushrod V8 without forced induction; the Porsche relies on a 3.6L twin-turbo hybrid system to hit its number. This page compares both cars spec-by-spec so you can decide which fits your driving style before visiting Greg Hubler Chevrolet inventory.
The 2027 Corvette Grand Sport is the choice for buyers who want naturally aspirated V8 performance, more torque, substantially more cargo space, and a longer powertrain warranty. The 2027 Porsche 911 Carrera GTS suits buyers who prioritize its T-Hybrid powertrain, more compact overall length, and longer basic warranty coverage. Neither car is wrong. They simply answer different questions about what a sports car should be.
| Specification | 2027 Corvette Grand Sport | 2027 Porsche 911 Carrera GTS |
|---|---|---|
| Engine | 6.7L NA V8, LS6 | 3.6L twin-turbo flat-6, T-Hybrid |
| Horsepower | 535 hp | 532 hp |
| Torque | 520 lb-ft | 449 lb-ft |
| Transmission | 8-speed dual-clutch | 8-speed PDK dual-clutch |
| Drivetrain | RWD | RWD |
| Cylinders | 8 | 6 |
| Displacement | 6.7L | 3.6L |
| Seating | 2 | 2 |
| Cargo Volume | 12.6 cu ft | 4.8 cu ft |
| Overall Length | 184.58 in | 179.3 in |
| Overall Height | 48.60 in | 51.0 in |
| Wheelbase | 107.0 in | 96.5 in |
| Curb Weight, Coupe | 3,520 lbs | 3,536 lbs |
| Fuel | Gasoline | Gasoline, premium |
| EPA City / Hwy / Combined | 15 / 23 / 17 mpg | 17 / 24 mpg |
| Basic Warranty | 3 yr / 36,000 mi | 4 yr / 50,000 mi |
| Powertrain Warranty | 5 yr / 60,000 mi | 4 yr / 50,000 mi |
The torque gap here is the headline. The Grand Sport’s 6.7L LS6 produces 520 lb-ft, which is 71 lb-ft more than the 911 GTS manages at 449 lb-ft. The Corvette also holds a slight horsepower advantage at 535 hp versus 532 hp for the Porsche. The Corvette achieves its output with a naturally aspirated V8, while the Porsche uses a smaller-displacement twin-turbo flat-six paired with its T-Hybrid system.
The Corvette’s forged pistons and rods, 13.0:1 compression ratio, 95-mm throttle body, and tunnel ram intake with high-velocity ports support its naturally aspirated performance character.
The Porsche takes a different path. Its T-Hybrid system integrates electric assistance with the 3.6L twin-turbo flat-six and 8-speed PDK, giving the 911 GTS a fundamentally different approach to delivering its 532 hp and 449 lb-ft of torque.
Both cars use an 8-speed dual-clutch transmission and send power to the rear wheels only. Standard Magnetic Selective Ride Control on the Grand Sport adapts the suspension in real time, and buyers can add the Z52 Sport Performance Package, Michelin Pilot Sport 4S, stiffer suspension, J56 high-performance iron brakes, or the Z52 Track Performance Package, carbon-ceramic brakes, Michelin Pilot Sport Cup 2R tires, carbon-fiber aero, quad center-exit exhaust, unique suspension tuning, for additional capability.
The 911 GTS comes standard with Porsche Active Suspension Management, PASM, Sport Suspension, lowered 10 mm versus the base 911, and Porsche Torque Vectoring Plus with an electronically controlled rear differential lock.
The cargo gap between these two cars is substantial. The Grand Sport offers 12.6 cu ft of total cargo space. The 911 GTS offers 4.8 cu ft. If you plan to pack for a weekend trip, the Corvette provides 7.8 cu ft more cargo capacity.
The Porsche counters with a more compact exterior footprint. At 179.3 inches long, the 911 GTS is 5.28 inches shorter than the 184.58-inch Corvette Grand Sport. The Corvette is also lower overall at 48.60 inches tall versus 51.0 inches for the Porsche.
The Grand Sport’s cockpit is built around the driver. Standard features across all trims include 8-way power seats for both occupants, a 12.7-inch center touchscreen, a 14-inch digital Driver Information Center, and a 6.6-inch auxiliary touchscreen. The 2LT adds heated and ventilated seats with power lumbar and wing adjustment, the 14-speaker Bose Performance Series audio system, and a Head-Up Display. The 3LT adds a sueded microfiber upper interior trim package and custom leather wrapping throughout.
The 911 GTS interior centers on a 12.6-inch digital instrument cluster and a sport-oriented layout. Standard GTS content includes Sport Seats Plus with 4-way electric adjustment, heated front seats, a GT Sport Steering Wheel in Race-Tex with Mode Switch, ambient lighting, and a 2-zone automatic climate control system with active carbon filtration. Wireless charging reaches up to 15 W. Both cars include wireless Apple CarPlay and wireless Android Auto.
The Grand Sport runs three screens, a 14-inch driver display, 12.7-inch center, and 6.6-inch auxiliary, with Google Built-In on the 12.7-inch unit, 5G vehicle connectivity, and Wi-Fi hotspot capability. The Performance App delivers real-time horsepower and torque graphs. An in-vehicle track coaching and lap timing system with automated speed tips and graphical lap analysis requires no laptop. The 911 GTS uses Porsche Communication Management with a Navigation Module, Voice Control, and the Porsche Track Precision App through the Sport Chrono Package.
Standard safety content on the Grand Sport includes Automatic Emergency Braking, Forward Collision Alert, Intersection Automatic Emergency Braking, Front Pedestrian and Bicyclist Braking, Lane Keep Assist with Lane Departure Warning, Rear Park Assist, and active handling stability control. Rear Cross Traffic Alert, Side Blind Zone Alert, and an HD Curb View Camera step up at 2LT and above.
The 911 GTS includes ParkAssist front and rear, Lane Keep Assist active from approximately 40 mph, Traffic Sign Recognition, Warn and Brake Assist with pedestrian protection, Driver Awareness Detection, emergency call systems, eCall and bCall, auto-high beam Matrix Design LED headlights with dynamic leveling, and Porsche Stability Management with ABS.
Both cars include standard Tire Pressure Monitoring, airbag systems, and daytime running lamps.
Warranty coverage splits the advantage between these two cars. The Corvette Grand Sport has a 3-year / 36,000-mile basic warranty and a 5-year / 60,000-mile powertrain warranty. The Porsche 911 Carrera GTS provides 4 years / 50,000 miles of both basic and powertrain coverage.
That gives the Porsche an advantage in basic coverage, with an additional year and 14,000 miles. The Corvette counters with the longer powertrain warranty, adding one year and 10,000 miles compared with the Porsche.
GM covers the first oil change and filter replacement within 2 years, and the first transmission canister filter replacement at 7,500 miles, within 3 years. Roadside assistance on the Grand Sport extends to 5 years or 60,000 miles. The myChevrolet app enables remote lock, unlock, vehicle status checks, and directions sent directly to the car’s display.
Standard equipment breadth on the Grand Sport is notable. The 1LT coupe arrives with Magnetic Ride Control, Michelin Pilot Sport All Season 4 run-flat tires, a performance exhaust, 20-inch front and 21-inch rear 10-spoke Pearl Nickel forged-aluminum wheels, and the full three-screen technology suite. The 911 GTS carries a strong standard content list as well, including the Sport Chrono Package, Sport Exhaust, PASM Sport Suspension, and PTV Plus, without requiring option packages for those items.
The Grand Sport’s customization depth goes further than almost any other production sports car at its level. The Z52 Track Performance Package brings J57 carbon-ceramic brakes, Michelin Pilot Sport Cup 2R tires, carbon-fiber aero, and quad center-exit exhaust as a factory package. That configuration requires significant additional investment at a Porsche dealer to replicate.
Greg Hubler Chevrolet serves buyers across Camby, Indianapolis, Plainfield, and the surrounding Indianapolis metro. If the 535-hp naturally aspirated LS6, 520 lb-ft of torque, available Z52 Track Performance Package, and 12.6 cu ft of cargo space make the Grand Sport your choice, the next step is checking available inventory or scheduling a drive.
Yes. The Grand Sport produces 535 hp and 520 lb-ft of torque versus 532 hp and 449 lb-ft in the 911 GTS. That gives the Corvette a 3-hp advantage and a more substantial 71-lb-ft torque advantage.
The Grand Sport uses a 6.7L naturally aspirated pushrod V8, LS6, with forged internals, port and direct fuel injection, and a 13.0:1 compression ratio. The 911 GTS uses a 3.6L twin-turbocharged flat-six with its T-Hybrid system and an 8-speed PDK.
The 2027 Corvette Grand Sport holds 12.6 cu ft of cargo. The 2027 Porsche 911 Carrera GTS offers 4.8 cu ft. The Corvette provides 7.8 cu ft more cargo capacity.
The Porsche 911 Carrera GTS is shorter overall at 179.3 inches versus 184.58 inches for the Corvette Grand Sport. The Corvette is lower, however, measuring 48.60 inches tall compared with 51.0 inches for the Porsche.
It depends on which coverage you prioritize. The 911 GTS offers a longer basic warranty at 4 years / 50,000 miles compared with the Grand Sport’s 3 years / 36,000 miles. The Corvette has the longer powertrain warranty at 5 years / 60,000 miles versus 4 years / 50,000 miles for the Porsche.
Yes. The optional Z52 Track Performance Package adds J57 carbon-ceramic brakes, Michelin Pilot Sport Cup 2R tires, carbon-fiber aero, a unique suspension tune, and quad center-exit exhaust. The Z52 Sport Performance Package adds Michelin Pilot Sport 4S tires, stiffer suspension, and J56 high-performance iron brakes for buyers who want a step between touring and full track spec.
Greg Hubler Chevrolet in Camby serves the Indianapolis metro area, including Plainfield and surrounding communities. Use the inventory link or the test drive CTA on this page to check availability and book time behind the wheel.
