Full Specification and Features
Basic Info
Model Number
2026 Buick Grand National GNX Turbo Hybrid
Warranty
3 Years / 36,000 Miles (Basic), 5 Years / 60,000 Miles (Powertrain) — expected
Available Colors
Black Metallic, Deep Garnet, Graphite Gray.
Body Type
Performance Coupe (Retro-Inspired) / Hybrid Powertrain
Engine
Engine Type
2.5L Twin-Turbocharged 4-Cylinder + Electric Motor Hybrid System — estimated
Displacement (cc)
2,500 cc — estimated
Engine Power
Approx. 550 hp (combined) — estimated
Torque
Approx. 700 Nm (516 lb-ft) — estimated
No. of Cylinders
4 (engine) + electric motor — estimated
Fuel System
Direct Injection + Electric Drive — estimated
Fuel Type
Gasoline + Electric Hybrid
Valve Configuration
DOHC, 4-valves per cylinder — estimated
Charger
AC home charging; DC fast charging capability (0-80% in 30 minutes) estimated
Performance
Maximum Speed
Approx. 280 km/h (174 mph) — estimated
Acceleration Time (0-100 kmph)
Approx. 3.8 sec — estimated
Transmission
Transmission Type
8-speed automatic with electric hybrid drive — estimated
Drive Type
Rear-Wheel Drive (RWD) or Performance Hybrid AWD — estimated
Steering
Steering Type
Electric Power-Assisted Steering (EPAS)
Steering Gear Type
Rack & Pinion
Minimum Turning Radius
TBD — estimated 5.5 m
Suspensions
Shock Absorbers Type
Adaptive Magnetic Ride Control Dampers
Front Suspension
Double Wishbone / Independent
Back Suspension
Multi-Link Independent with Performance Tuning
Dimensions and Weight
Length
4,900 mm (192.9 in) estimated
Width
1,950 mm (76.8 in) estimated
Height
1,380 mm (54.3 in) estimated
Boot Space
TBD (estimated 350 liters)
Wheel Base
2,820 mm (111.0 inches) estimated
Ground Clearance
130 mm (5.1 in) — estimated
Kerb Weight
Approx. 1,750 kg (3,858 lbs) — estimated
Tyres
Tyre Size
255/35 R20 (Front), 275/35 R20 (Rear) estimated
Tyre Type
Performance All-Season / Summer Hybrid Tires
Wheel Size
20-inch Alloy Wheels
Brake System
Front Brake
6-Piston Ventilated Disc (Carbon-Ceramic Option)
Rear Brake
4-Piston Ventilated Disc
Fuel
Mileage in City
TBD estimated 25 MPG (US) / 9.4 L/100 km
Mileage on Highway
TBD estimated 30 MPG (US) / 7.8 L/100 km
Capacities
Seating Capacity
4 seater
Fuel Tank Capacity (Litres)
60 liters
Features
AntiLock Braking System
Yes
Safety
Entertainment
Audio System Remote Control
Yes
Speakers Front & back
Yes
Bluetooth Connectivity
Yes
USB & Auxiliary Input
Yes
Others Comfort & Convenience
Adjustable Steering Column
Yes
Height Adjustable Driving Seat
Yes
Electric Adjustable Seats
Yes
Electric Folding Rear View Mirror
Yes
Automatic Climate Control
Yes
Low Fuel Warning Light
Yes