BMW M8 F91/F92/F93Coupé/Convertible/Gran Coupé2019–2025

BMW M8 F91/F92/F93 Engines — The Complete UK Guide

Every engine fitted to the M8 range — from the S63 twin-turbo V8 in the standard car to the 625 bhp Competition variant.

Real UK replacement costs, honest failure data, and the S63's rod bearing and crank hub risks that define this generation.

Backed by verified specialist data.

Explore M8 Engines
  • Current Model -Pattern Data
  • Coupé/​Convertible/​Gran CoupéBody Style
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Engine Database

BMW M8 F91/F92/F93 Engine Codes — The Complete Database

Every engine fitted to the first-generation M8 range — from the S63 twin-turbo V8 in the standard model to the higher-output Competition variants.

Engine CodeFuelPowerYearsReliabilityEnquiries (2025)Avg. Recon Cost
S63B44T3BMW S63PetrolTwin-turbo591–600 bhp2019–2020★★★☆☆PATTERN DATA—(pattern data)£7,000–£12,000[PLACEHOLDER]
S63B44T4BMW S63PetrolTwin-turbo600–617 bhp2020–2025★★★☆☆PATTERN DATA—(pattern data)£7,000–£12,000[PLACEHOLDER]
S63B44BBMW S63PetrolTwin-turbo625 bhp2020–2025———
BMW M8 F91/F92/F93 -Overview

Overview

BMW M8 F91/F92/F93 — Overview

The F91/F92/F93 is the first-generation BMW M8, the high-performance version of the G15 8 Series. Introduced in June 2019, the M8 was initially produced in the 2-door convertible (F91) and 2-door coupé (F92) body styles, with a 4-door Gran Coupé (F93) added in October 2019.

Production ran from July 2019 to October 2025. Powered by the S63 twin-turbocharged V8 engine shared with the F90 M5, the M8 marked BMW M's return to the grand tourer segment following the M6.

Key Facts

  • PlatformBMW CLAR (shared with G15 8 Series, G30 5 Series)
  • PredecessorBMW M6 (F06/F12/F13)
  • SuccessorCurrent model — no successor announced
  • Sibling Body Styles in this GenerationF91 (Convertible), F92 (Coupé), F93 (Gran Coupé)

Market Intelligence

As a low-volume, high-performance model that recently ended production in October 2025, the M8 is a niche enthusiast vehicle — the Competition variants are the most sought-after for their 625 bhp output, while the Gran Coupé offers the most practicality.

04Best & Worst Engines

Best & Worst Engines

Thin-Data Summary

The M8's engine range is defined by one engine family — the S63 twin-turbocharged V8 — in three states of tune. The S63B44T3 (2019–2020) produces 591–600 bhp and is found in early standard and Competition models. The S63B44T4 (2020–2025) produces 600–617 bhp in later standard and Competition models. The S63B44B is the Competition variant producing 625 bhp. All M8s use an 8-speed ZF automatic transmission (M-Steptronic) and M xDrive all-wheel drive with rear-wheel-drive mode. The S63 is a proven engine with a well-documented reputation — but it carries the same rod bearing and crank hub concerns that affect the M5 (F90) and other S63-powered models. If you're buying an M8, the Competition variant offers the most performance; the standard car is more accessible; all require meticulous maintenance.

BMW M8 F91/F92/F93
Ownership Economics

EngineTypical MileageCommon Major FailureRepair Cost (Specialist)Replacement Cost (Recon)Ownership Verdict
S63 4.4 V8 (Standard)30k–60kRod bearing wear, crank hub, oil leaks£2,000–£5,000£7,000–£12,000
High Performance -outstanding but costly
S63 4.4 V8 (Competition)30k–60kRod bearing wear, crank hub, oil leaks£2,500–£6,000£8,000–£14,000
Most Expensive -the ultimate M8, with ultimate costs

The M8 rule

A £7,000–£12,000 S63 recon against a £40,000 M8 sits at 18–30% of the car's value -within our 70% BMW threshold. Against a well-kept £60,000+ example, the same recon drops to 12–20% -a maintenance decision. On a Competition variant, the costs are higher but proportional to the car's value. The M8's high retained value means replacement almost always makes sense.

Key Takeaways

  • Which M8 Costs Least To Own?

    S63 standard car -slightly lower power, marginally lower running costs.

  • Which M8 Costs Most To Own?

    S63 Competition -higher output, higher running costs.

  • Which M8 Is Best Value?

    S63 standard car -the most accessible M8 variant.

Common Problems

M8
Engine Replacement Costs -By Engine and Condition

Diesel & Petrol Lineup

Petrol Variants

Scope note: All variants listed are first-generation M8 only (2019–2025). The M8 was available in three body styles: F91 (Convertible), F92 (Coupé), and F93 (Gran Coupé). All share the same S63 engine family.

Market Intelligence

Most Requested Engines (2025)

    Most Requested Variants

      Average Replacement Cost

      Most Common Failures

        FAQ

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