The available manufacturer evidence verifies three relevant examples, but it does not establish a reliable, market-specific list of six 2025 V-8 luxury sedans. The Audi S8 and Porsche Panamera GTS have 2025-specific evidence; Bentley’s current Flying Spur is a V-8 hybrid, but its current specifications do not confirm a 2025 configuration. The distinctions matter: model year, market, trim, and whether a power figure is engine-only or combined system output all affect a fair comparison.
Why this is not a verified six-car 2025 list
The title’s six-car premise cannot be supported by the available manufacturer information without filling gaps by guesswork. The confirmed evidence covers an MY25 Audi S8 specification for New Zealand, Porsche’s announcement of the 2025 Panamera GTS, and Bentley’s current Flying Spur hybrid page, which does not establish that the listed configuration is a 2025 model. These are useful examples, not a confirmed six-car lineup.
The evidence also spans different markets and model-year labels. Audi New Zealand’s sheet is explicitly for MY25; Audi USA’s S8 figures are current but not labeled MY25; Porsche’s announcement names the 2025 GTS; Bentley warns that specifications vary by market and can change. A valid six-car comparison needs one intended market and exact 2025 trim specifications for every entry.
Verified 2025 V-8 luxury sedan examples
Audi S8: MY25 New Zealand specification
Audi New Zealand’s MY25 specification sheet identifies the S8 by model code 4NCSSA2025. It lists a 3,996 cc V-8, maximum output of 420 kW, maximum torque of 800 Nm, quattro all-wheel drive, and an eight-speed tiptronic transmission. Audi gives a 0–100 km/h time of 3.8 seconds and a top speed of 250 km/h; the sheet lists seating for five. These are New Zealand manufacturer specifications and should not be assumed to describe every market’s MY25 car. Audi New Zealand MY25 S8 specifications
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Audi USA’s current sedan page separately describes the S8 as producing 563 hp and reaching 0–60 mph in 3.8 seconds, but it does not label those figures as MY25. Audi’s international S8 page lists technical data as of August 20, 2026—420 kW, 800 Nm, a 3,996 cc V-8, and 0–100 km/h in 3.8 seconds. Keep those current figures separate from the New Zealand MY25 sheet and from Audi USA’s unlabeled-current figures. Audi USA sedan models · Audi international S8 technical data
Porsche Panamera GTS: 2025 model
Porsche’s announcement identifies the 2025 Panamera GTS and says it uses a further-developed 4.0-litre twin-turbo V-8. For the GTS, Porsche reports 368 kW (493 hp), 0–60 mph in 3.6 seconds, and a 188 mph top track speed. These are manufacturer figures, not independent test results. Porsche describes the chassis as performance-tuned and the interior as focused and high-quality, and says the added dynamics come without significant reduction in ride comfort. Porsche’s 2025 Panamera GTS announcement
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Current Bentley Flying Spur: relevant, but not confirmed as a 2025 configuration
Bentley describes the Flying Spur as its four-door luxury sedan. Its current US page covers a High Performance Hybrid pairing a turbocharged 4.0-litre V-8 with an electric motor. Bentley lists 671 bhp combined system power, 568 lb-ft of engine torque, 686 lb-ft of combined system torque, a 25.9 kWh battery, and 0–60 mph in 3.8 seconds. The power and torque values use different bases: engine-only torque is not the same measure as combined system torque. These current-page specifications do not verify an exact 2025 configuration, and Bentley says specifications can vary by market and change. Bentley Flying Spur current US model page
The current Flying Spur S page reports a different 0–60 mph time—3.5 seconds—and describes 671 bhp combined system output. Those S-trim figures should not be combined with the standard Flying Spur’s specifications. Neither current page alone confirms a 2025 trim configuration. Bentley Flying Spur S current US model page
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For comfort and chassis context, Bentley’s standard Flying Spur page describes passenger space and comfort, all-wheel steering, twin-valve dampers, and Bentley Dynamic Ride anti-roll technology. These are manufacturer descriptions, not hands-on ride assessments. Bentley calls the car “The quintessential Bentley four-door sedan, the Flying Spur offers a unique balance of power, luxury, space and style.”
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How to compare V-8 luxury sedans fairly
- Match market, model year, and trim. “2025” does not guarantee identical specifications across countries, and a current model page is not proof of a 2025 configuration.
- Separate engine output from hybrid system output. A hybrid’s combined power or torque includes the electric motor; do not compare it as if it were the V-8’s standalone rating.
- Use matching acceleration conventions. Audi’s New Zealand sheet reports 0–100 km/h, while Porsche and Bentley report 0–60 mph. Those are different distance conventions and should not be treated as directly interchangeable.
- Identify the source and claim type. Manufacturer specifications and acceleration claims are not independent test results. Comfort descriptions from automakers likewise do not substitute for a comparative road test.
With the current evidence, the defensible conclusion is a short list of verified examples—not six confirmed 2025 entries. A complete six-car comparison requires exact, market-specific 2025 trim evidence for each sedan.
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