Aston Martin Valhalla Spider keeps 217 mph top speed with roof off as limited-run drop-top arrives

Aston Martin has revealed the Valhalla Spider, an open-top variant of its V8 hybrid supercar that retains the coupé’s electronically limited 217 mph (350 km/h) top speed whether the roof is fitted or not.

The Spider uses the same hybrid powertrain as the Valhalla coupé: a 4.0-litre twin-turbo V8 with a flat-plane crank paired to three electric motors and an eight-speed dual‑clutch gearbox. Combined output is given as 1,064 hp (794 kW) and 811 lb‑ft (1,100 Nm).

Aston has preserved the core chassis engineering by retaining the carbon-fibre monocoque and fitting a targa-style removable panel rather than a folding soft-top or complex mechanism. A fabric roof is standard in some markets with a carbon‑fibre panel offered as an option, though some reports say a carbon hardtop is fitted as standard in the U.S.

"consistent vehicle balance, stability and driver confidence," said Aston.

Several aerodynamic and stability changes make the feat possible. Engineers have recalibrated the car’s active aero and its electronic stability programme to suit roof‑on and roof‑off driving, raised the rear intake snorkel by 35 mm to improve cooling with interrupted airflow, and added a wind deflector that channels air over the cockpit and into the scoop when required.

The Spider also incorporates practical packaging changes: frameless doors with revised kinematics for easier operation, folded storage for the fabric roof in new 15-litre cubbies in the lower sills, and a new carbon‑fibre Touring Seat fitted as standard (the coupé’s more aggressive carbon seats remain available as an option).

Aston says the Spider’s structural approach — bonding a removable top to the moulded carbon lower tub — avoids the large stiffness penalties that typically force heavy reinforcement of the rocker and central tunnel areas on open-top supercars.

Performance figures reported across outlets vary slightly: one source gives a 0–60 mph time of 2.3 seconds for the Spider, while another lists 0–62 mph in 2.5 seconds. Reported kerb weights also differ; one figure quoted is 1,680 kg with lightweight options, around 25 kg heavier than the coupé.

Production and pricing are currently reported with differing levels of certainty. One report says Aston plans to build 999 Valhallas in total and expects the Spider to make up around 25% of that run — roughly 250 cars — with a roughly 40% premium over the coupé, taking the entry price to about £1.3 million. Other sources say Aston has not disclosed final volumes or pricing yet.

Aston has previously signalled it will prioritise range‑topping derivatives to lift average selling prices; one report notes the Spider will play a material role in boosting margins as the company focuses on higher‑value derivatives.

The Valhalla Spider makes the brand’s fastest open‑cockpit claim: with the Spider capable of 217 mph with the roof off, it can outpace the V12‑powered Valkyrie Spider, which is restricted to 205 mph without its roof fitted.

Aston staged the global debut of the Valhalla Spider at the 2026 Concours at Wynn Las Vegas, and several sources report deliveries will begin in the third quarter of 2027. Availability by market and the specification of the standard roof — fabric or carbon hardtop — appears to vary by territory according to different reports.

The spider variant keeps the Valhalla’s bespoke wheel and tyre package and the same suspension, braking and steering hardware as the coupé, and continues to use bespoke Michelin rubber developed for the model.

Aston says the Spider’s systems adapt automatically to changes in airflow when the roof is removed to preserve what the company describes as consistent balance and stability, and to maintain driver confidence at extreme speed.