BMW M8 Competition vs Aston Martin DBX707
Compare the BMW M8 Competition vs Aston Martin DBX707. The BMW M8 Competition is £75,000 cheaper. The BMW M8 Competition is 0.3s quicker to 60mph. The BMW M8 Competition is more fuel efficient. Full performance, cost & ownership breakdown.
The BMW M8 Competition is priced from £135,000, powered by a 4.4L Twin-Turbo V8, producing 617 hp, with 750 Nm of torque, reaching 0-60 mph in 3s, a top speed of 190 mph, sent to the road via all-wheel drive. The Aston Martin DBX707 is priced from £210,000, powered by a 4.0L Twin-Turbo V8, producing 707 hp, with 900 Nm of torque, reaching 0-60 mph in 3.3s, a top speed of 193 mph, sent to the road via all-wheel drive.
The BMW M8 Competition offers a 420-litre boot, runs on petrol, returns around 23 mpg, is covered by a 3yr / unlimited mi warranty. The Aston Martin DBX707 offers a 632-litre boot, folding rear seats, runs on petrol, returns around 21 mpg, is covered by a 3yr / unlimited mi warranty.
On cost of ownership, the BMW M8 Competition is £75,000 cheaper than its rival, the BMW M8 Competition costs less in annual maintenance (£1,500 versus £1,700), the BMW M8 Competition is the more fuel-efficient choice, a full tank costs around £85 for the BMW M8 Competition and £100 for the Aston Martin DBX707.
Driving Character: BMW M8 Competition vs Aston Martin DBX707
The BMW M8 Competition defines the modern grand tourer, blending brutal 617hp twin-turbocharged V8 performance with a sophisticated M xDrive all-wheel-drive system. While it possesses the pace to dismantle almost any supercar, its 4,395lb mass remains a constant consideration, particularly through tighter, technical sequences where it lacks the nimble precision of a lighter M4. The adjustable rear-biased drivetrain allows for playful rotation, yet the chassis is primarily tuned for crushing vast distances with absolute composure. It is a formidable machine that prioritises stability and immense, exploitable torque over raw, stripped-back track feedback, representing the ultimate high-speed cruiser in the current M portfolio.
The DBX707 redefines the expectations of a luxury SUV, injecting 707hp of twin-turbo V8 fury into a high-riding chassis that refuses to behave like a typical utility vehicle. With its intelligent all-wheel-drive system and electronic rear differential, it manages to put its immense power down with surprising effectiveness. While it possesses remarkable grip, the physics of its 5071 lbs weight inevitably surface during aggressive cornering. The nine-speed wet-clutch gearbox is snappy, providing gear changes that feel purposeful and sharp, allowing the driver to exploit the engine's 900Nm of torque to its absolute limit with confidence and speed.
Head-to-head, the division is clear: the BMW M8 Competition takes our 0-100 driving character grading, 78 against 78. Characteristic of the BMW M8 Competition: Effortless, high-speed GT pace with genuine back-road ability. For the Aston Martin DBX707: Startlingly quick and composed for a two-tonne-plus SUV. In outright terms it is 617 hp against 707 — a 90 hp gap — and the BMW M8 Competition reaches 60 mph 0.3s sooner.
Interior & Cabin: BMW M8 Competition vs Aston Martin DBX707
Stepping into the M8 Competition reveals a cabin dripping in premium Merino leather and intricate carbon fibre detailing, confirming its status as a pinnacle M product. The ergonomics are quintessential BMW, featuring an intuitive, M-specific digital interface that provides all critical telemetry without overwhelming the driver. While the materials and build quality are exemplary, the two-door layout compromises access, and the rear quarters remain strictly occasional seats despite the car's generous overall proportions. It strikes a successful balance between a focused, driver-centric cockpit and the luxurious, refined ambiance expected of a high-end grand tourer, successfully isolating occupants from the road's harsher realities.
The interior of the DBX707 is a masterclass in performance luxury, featuring bespoke sport seats and Alcantara detailing that separates it from the standard model. It offers genuine, spacious accommodation for four adults, ensuring that performance does not come at the expense of passenger comfort. However, when compared to the ultra-modern interfaces of the Cayenne or the Urus, the cabin tech feels slightly behind the curve. While the build quality is superb and the materials are quintessentially British, the infotainment system lacks the cutting-edge fluidity of its most direct rivals at this price point.
Head-to-head, the division is clear: the BMW M8 Competition takes our 0-100 interior & cabin grading, 86 against 85. Characteristic of the BMW M8 Competition: Luxurious, driver-focused cabin with excellent build quality. For the Aston Martin DBX707: Lavish, driver-focused cabin unlike most performance SUV rivals.
Daily Usability: BMW M8 Competition vs Aston Martin DBX707
Despite its status as a performance powerhouse, the M8 Competition remains surprisingly liveable for daily duties. The 440-litre boot provides sufficient volume for weekend escapes, though the long doors and low seating position can hinder easy egress in tight urban car parks. Comfort mode successfully softens the adaptive suspension, making motorway slogs relatively effortless, while the all-wheel-drive system ensures the car remains secure in varied UK weather conditions. Its sheer width, however, requires constant vigilance in narrow city streets, as the low-profile rubber and stiff structural setup demand care when traversing speed bumps or uneven urban asphalt.
Practicality is the DBX707’s greatest asset, boasting a 632-litre boot that makes it a legitimate family vehicle capable of swallowing luggage with ease. Its air suspension system with adaptive dampers allows the car to switch seamlessly between a composed, comfortable cruiser and a stiffened, responsive performance machine. While fuel economy is inevitably poor at 21mpg, the trade-off is a level of versatility rarely seen in such a powerful vehicle. It is a car that thrives on variety, handling the school run and high-speed motorways with equal parts ease and effortless, explosive capability.
Head-to-head, the division is clear: the Aston Martin DBX707 takes our 0-100 daily usability grading, 70 against 82. Characteristic of the BMW M8 Competition: Comfortable, capable long-distance GT for daily use. For the Aston Martin DBX707: Genuinely practical family SUV with supercar-baiting pace. that means 420 litres of boot space against 632, and everyday running costs that favour the BMW M8 Competition at the pumps.
Ownership: BMW M8 Competition vs Aston Martin DBX707
Ownership of an M8 Competition is an exercise in managing significant operating costs, commensurate with its supercar-killing performance. The BMW dealer network offers comprehensive support, but prospective buyers should factor in the substantial expenses associated with premium tyres and high-performance brake components, which wear rapidly under enthusiastic use. While residuals have stabilised, the market for such a specific, high-output V8 GT remains relatively narrow. Annual maintenance costs are predictably high, though the car benefits from a robust community and global parts availability, ensuring that the heavy financial commitment yields a reliably formidable and well-documented performance machine.
Maintaining a DBX707 is a manageable affair compared to its more exclusive siblings, thanks to the expansion of the Aston Martin dealer network and improved service accessibility. Demand for the vehicle on the used market is robust, driven by the growing appetite for high-performance SUVs, though early depreciation remains a factor for first owners. Tyre costs are significant given the car’s weight and performance, and owners must prepare for the regular attention required by such a high-output platform. Overall, it serves as a reliable, albeit premium-cost, flagship for those needing utility with a supercar-killing powertrain.
Head-to-head, the division is clear: the BMW M8 Competition takes our 0-100 ownership grading, 72 against 62. Characteristic of the BMW M8 Competition: Backed by strong BMW reliability reputation. For the Aston Martin DBX707: Strong demand keeps residuals healthy. On the wallet the two diverge at £135,000 versus £210,000 — a £75,000 difference, with annual maintenance of £1,500 against £1,700.