The Peugeot 508 Fastback GT Line represents a dramatic, design-forward shift for the French automaker. Moving away from the conventional, conservative three-box saloons of old, this generation of the 508 morphs into a low-slung, sweeping five-door fastback engineered to steal glances from premium German rivals.
With its frameless doors, a sharp "coupe-like" roofline, and the striking vertical "feline fang" LED daytime running lights, the 508 Fastback possesses immense road presence. The GT Line trim acts as the sweet spot in the lineup, offering the aggressive visual flair, blacked-out exterior styling cues, and high-end interior tech of the top-tier GT models, but pairing them with a more accessible, highly efficient range of petrol and diesel engines. Inside, it boasts Peugeot's radical i-Cockpit layout, presenting a cabin that feels more like a stealth fighter jet than a standard family car.
Technical Specifications
(Note: Data reflects typical figures for the highly popular 2.0-litre BlueHDi diesel and 1.6-litre PureTech petrol variants common to the GT Line trim).
⚙️ Engine & Performance Options
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1.5L / 2.0L BlueHDi Diesel: 130 bhp to 161 bhp / Up to 400 Nm of torque
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1.6L PureTech Petrol: 178 bhp (180 PS) / 250 Nm of torque
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Transmission: 8-Speed Efficient Automatic Transmission (EAT8) with steering wheel paddle shifters (1.5L diesel occasionally found in 6-speed manual)
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Drivetrain: Front-Wheel Drive (FWD)
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0-62 mph (0-100 km/h): ~8.0 to 10.0 seconds (depending on engine choice; 2.0L Diesel/1.6L Petrol sit around ~8.3s)
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Top Speed: 140–143 mph (225–230 km/h)
⛽ Fuel Economy & Emissions
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Combined Fuel Consumption (Diesel): ~55–64 mpg (WLTP)
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Combined Fuel Consumption (Petrol): ~41–48 mpg (WLTP)
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CO2 Emissions: ~118–135 g/km (Highly efficient, Euro 6 compliant)
📐 Dimensions & Practicality
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Body Style: 5-door Liftback / Fastback Coupe
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Length / Width / Height: 4,750 mm / 1,859 mm / 1,403 mm
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Boot Capacity (Seats Up): 487 Litres (accessed via a wide hatchback tailgate)
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Boot Capacity (Seats Down): 1,537 Litres
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Fuel Tank Capacity: 55 Litres (62 Litres on some diesel variants)
Key Features & Trim Highlights
🦁 GT Line Exterior Styling
The GT Line treatment adds sharp, sporty styling elements that emphasize the car's wide stance and low profile:
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Front Fascia: Chequered radiator grille with a premium chrome edge trim, framed by self-leveling full LED headlights.
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Dark Styling: Gloss black door mirror shells (Nera Black), gloss black window surrounds, and a striking gloss black rear bumper diffuser panel.
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Wheels: 18-inch 'Hirone' diamond-cut, two-tone alloy wheels as standard.
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Rear Lighting: 3D Full LED rear lights featuring Peugeot’s signature "three-claw" illumination effect with a dynamic scrolling welcome sequence.
🛩️ The Peugeot i-Cockpit® Interior
The cabin layout is completely unique, trading traditional automotive design for a highly modern, wrapping dashboard structure:
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Compact Steering Wheel: A small, sporty, flat-bottomed and flat-topped perforated leather steering wheel with GT Line badging.
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Digital Displays: A configurable 12.3-inch head-up digital instrument panel paired with a central 10.0-inch High-Definition capacitive touchscreen.
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"Piano Key" Toggles: A row of elegant, physical satin-chrome toggle switches below the screen for instant access to climate, navigation, and media menus.
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Premium Materials: Carbon-effect dashboard finishes, ambient LED lighting, blue interior contrast stitching, and tri-material cloth/'Imila' leather-effect sport seats with electric lumbar support.
🧠 Safety & Technology
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Connected 3D Navigation: With TomTom® Live updates and intelligent voice recognition.
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Mirror Screen®: Full smartphone integration featuring Apple CarPlay™ and Android Auto.
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Safety Packs: Includes Active Blind Spot Detection, Lane Keeping Assist, Advanced Driver Attention Alert, and Speed Limit/Road Sign Recognition.
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Visio Park 1: A 180-degree color reversing camera alongside front and rear parking sensors.
💡 Buying Tip: The 508 Fastback features frameless side doors just like a pure sports coupe. While they look incredibly premium when opening the car, double-check the window seals on used models to ensure there is no wind hiss or whistling at motorway speeds!