DBX 550hp M177 Engines
from £8,500 to £14,500
Rebuilt units from £8,500 · Common codes: M177 DE40 AL, M177 DE40 AL.01, M177 DE40 AL.15
Get specialist quotes from UK Aston Martin DBX engine experts. Compare reconditioned & rebuilt engines for DBX to DBX707 - M177 covered. Get specialist quotes for your DBX.
DBX 550hp M177 Engines
from £8,500 to £14,500
Rebuilt units from £8,500 · Common codes: M177 DE40 AL, M177 DE40 AL.01, M177 DE40 AL.15
DBX707 707hp Performance Engines
from £12,000 to £18,500
Rebuilt units from £12,000 · Common codes: M177 DE40 AL DBX707, M177 DE40 AL.20, M177 DE40 AL.25
DBX S Latest-Calibration Engines
from £10,500 to £16,500
Rebuilt units from £10,500 · Common codes: M177 DE40 AL DBX S, M177 DE40 AL.15, M177 DE40 AL

Most replacements completed within 3-5 days.


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Not sure which variant your Aston Martin DBX is- Enter your registration number above - we'll identify the exact sub-model, engine code and compatible replacement options instantly.

Every engine code fitted to the Aston Martin DBX across all generations, with technical specs, compatible variants and trims, known failure points, and average rebuilt prices from UK specialists. Select any engine code to compare quotes.
Extracted from detailed petrol and performance engine families across Aston Martin DBX variants.

M177 DE40 AL - 4.0L Petrol
Main replacement demand comes from timing-chain, cooling-system and performance thermal-management faults.
Compatible variants
Avg. rebuilt price
£8,500 - £14,500
Supply only
Technical specifications
Common failures
Not sure which engine code?
Can't find your engine code- Enter your registration number above - we'll instantly identify the exact unit, its technical specifications, and live replacement prices from UK Aston Martin DBX engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.

The Aston Martin DBX's Mercedes-AMG M177 4.0L V8 twin-turbo petrol engine delivers exceptional performance but has documented failure points driving UK replacement enquiries. Every rebuilt engine supplied through EngineMarket includes upgraded internal components designed to address the original failure point - plus a minimum 12-month unlimited mileage...
Turbocharger Boost Loss
Most affected vehicles
Aston Martin DBX Standard, DBX707, DBX S (2020-present, M177 DE40 AL family)
Failure mileage range
40,000-70,000 miles
Typical failure window
Root cause
Wastegate actuator wear or compressor wheel fatigue under sustained boost pressure causes reduced turbo output and ECU-triggered limp mode.
Repair options & estimated costs (UK ranges)
| Repair tier | Dealer price | Specialist price | What it involves | Longevity / suitability |
|---|---|---|---|---|
| Minor - Actuator Replacement | £1,800 - £2,800 | £1,200 - £1,900 | Replace wastegate actuator, recalibrate boost control | Viable only if turbo internals undamaged; diagnostic essential first |
| Intermediate - Turbo Rebuild | £4,500 - £7,200 | £3,200 - £5,400 | Strip, inspect, replace worn bearings/seals, balance rotating assembly | Extends life 20-40k miles if block/head healthy; not suitable for high-mileage DBX707 |
| Full Replacement - Rebuilt M177 Engine | £14,500 - £22,000 | £8,500 - £14,500 | Supply & fit rebuilt M177 with upgraded turbo components, bench-tested, ECU calibrated | Restores factory performance with enhanced reliability; includes 12-month warranty |
Our recommendation
On a DBX worth £80,000-£150,000, if diagnostics confirm only actuator failure and mileage is under 50k, the minor fix offers best value. For DBX707 owners or vehicles over 60k miles with confirmed turbo damage, a rebuilt M177 with uprated components provides long-term peace of mind.
Compare rebuilt M177 DBX engine prices for your variant
Every engine type for the Aston Martin DBX is available through our UK network with typical price ranges based on M177 variant, calibration code and budget.
Compare Aston Martin DBX engine prices with vetted UK suppliers
All engine types include a minimum 12-month unlimited mileage warranty when sourced through EngineMarket. Prices are typical UK market ranges based on historical quote data from our network and depend on exact engine code, variant, mileage and supplier. Use our free comparison tool above - enter your registration to get tailored quotes for your specific Aston Martin DBX within hours.

Every displacement fitted to the Aston Martin DBX is listed below, with compatible M177 engine codes, production years and common failure notes to help identify your replacement option.
The sole engine fitted to the Aston Martin DBX across all UK variants is the Mercedes-AMG sourced M177 4.0L V8 twin-turbo petrol unit, delivering 550hp in standard form and 707hp in DBX707 specification with variant-specific ECU calibrations.
Engine Code(s)
M177 DE40 AL, M177 DE40 AL.01, M177 DE40 AL.15, M177 DE40 AL DBX707, M177 DE40 AL.20, M177 DE40 AL.25, M177 DE40 AL DBX S
Compatible Models (UK)
DBX Standard (2020-2022), DBX First Edition (2020), DBX Signature Edition (2021-2022), DBX707 (2022-2024), DBX S (2024-present), DBX by Q Bespoke
Power output
Verified by registration
Common Failure Points
Turbocharger wastegate actuator wear, timing chain tensioner rattle, HPFP pressure loss, coolant thermostat housing cracks
Production Years: 2020-2022
Compare Aston Martin DBX 4.0L petrol engine prices
Choose your Aston Martin DBX engine by fuel type to compare realistic replacement prices, known M177 issues, and compatible UK supply options - from standard DBX 550hp to the high-performance DBX707.
The Aston Martin DBX exclusively uses the Mercedes-AMG M177 4.0L V8 twin-turbo petrol engine across all UK variants, with calibration differences defining standard, DBX707 and DBX S performance levels.
Common Aston Martin DBX Petrol Engine Families
Found In
Known For
Typical Petrol Models
The Aston Martin DBX exclusively uses the Mercedes-AMG M177 4.0L V8 twin-turbo petrol engine across all UK variants, with calibration differences defining standard, DBX707 and DBX S performance levels.
Common Aston Martin DBX Petrol Engine Families
Found In
Known For
Typical Petrol Models
Not sure which fuel type your Aston Martin DBX has- Enter your registration number above to instantly identify your engine code, fuel system and compatible replacement options - all backed by a minimum 12-month unlimited mileage warranty from UK Aston Martin DBX specialists.

This section covers all major M177 engine changes across the Aston Martin DBX production timeline, organised so owners can quickly identify their engine calibration and compare rebuilt engine prices from UK specialists.
⚙Key Changes
▣Main Engines
M177DE40 AL - 4.0L petrol (DBX Standard, First Edition)
M177DE40 AL.01 - 4.0L petrol (DBX First Edition early production)
▰Popular Models
🔧Known For
Engine Codes Covered:
M177 DE40 ALM177 DE40 AL.01