Aston Martin has announced an open-top version of its mid-engined Valhalla supercar, due to arrive in 2027.
Making its global debut at this weekend’s 2026 Concours at Wynn Las Vegas, the Valhalla Spider packs the same 1,079hp powertrain as its coupe counterpart.
The plug-in hybrid setup combines a trio of electric motors with a twin-turbocharged 4.0-litre flat-plane V8 engine.
These can propel the Valhalla Spider to an electronically limited 217mph, even without its roof in place. This matches the top speed of the Valhalla coupe, as does a 0-62mph time of 2.5 seconds.
It makes the Spider the fastest open-cockpit production Aston Martin to date. The extreme Valkyrie Spider hypercar could also achieve 217mph, but only with its roof fixed in position.
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The Valhalla Spider gained input from Aston Martin Performance Technologies (AMPT): the consulting arm of the Aston Martin Aramco Formula 1 Team.
AMPT assisted with design and development, plus the refinement of aerodynamic details, making the Spider just as quick as the coupe.
The same carbon fibre monocoque chassis underpins the Valhalla Spider, and it retains dramatic, upwards-opening carbon fibre dihedral doors.
The Spider tips the scales at 1,680kg: a modest 25kg weight gain compared to the fixed-roof version. Helping to save weight is a fabric stowable roof, intended to allow for unexpected changes in the weather.
With the roof in place, the Spider’s top speed is limited to 124mph. However, an optional carbon fibre hardtop allows for the full 217mph maximum.
The fastest open-top Aston to date
The number of changes made to accommodate the Valhalla’s transformation from coupe to Spider have been minimal.
Ensuring the Spider’s occupants remain unruffled, a new wind deflector clips into place with the roof removed. This directs airflow from the windscreen over the cockpit, channeling it into a 35mm taller snorkel that feeds the engine.
Aston Martin has also revised the Valhalla’s electronic stability control system, and adapted its active aerodynamics to account for the lack of a roof. The Spider can generate in excess of 600kg of downforce.
New carbon fibre ‘Touring’ seats are standard for the Spider, designed to boost comfort and aid access with the roof on. However, buyers can still specify the coupe’s carbon fibre buckets, should they prefer.
First deliveries expected in 2027
Following the announcement of the Valhalla Spider, Aston Martin CEO, Adrian Hallmark said: “Valhalla coupe broke so much new ground. Our first production mid-engined supercar. Our first plug-in hybrid. The first to feature our bespoke flat-plane-crank V8 engine, and the first to use our all-new eight-speed dual-clutch transmission.
“It also pioneered a fresh design language and achieved a unique blend of exemplary on-road feel and engagement matched by extraordinary on-track capability.
“Valhalla Spider builds on those impressive ‘firsts’, preserving the aesthetic beauty and dynamic bandwidth of Valhalla coupe while introducing the expanded opportunities for enjoyment and engagement that can only be found in an open-cockpit supercar.
“High speed or low speed. Rain or shine. Roof on or roof off. Road or track. Valhalla Spider ticks every box.”
Aston Martin expects the Spider to account for one-in-four examples of the planned 999 Valhallas to be made. First deliveries are expected in the third quarter of 2027.
• John Redfern writes for Motoring Research