Mercedes‑AMG GT R190 Engines — The Complete UK Guide
Every engine fitted to the AMG GT R190 roadster — the 4.0‑litre M178 twin‑turbo V8 in its 476‑585hp guises. Real UK costs, performance‑car running realities, and the hot‑vee cooling demands that define this generation. Backed by real UK enquiries in 2025 [MB‑VERIFIED].
Explore R190 Engines
Mercedes‑AMG GT R190 Engine Codes — The Complete Database
The M178 twin‑turbo 4.0‑litre V8 across all R190 roadster power outputs — from entry‑level GT to range‑topping GT R.
Overview
Mercedes‑AMG GT R190 — Overview
The R190 is the roadster bodystyle of Mercedes‑AMG's first‑generation GT, launched in 2017 as the open‑top counterpart to the C190 coupé.
It shares the same aluminium spaceframe chassis and front‑mid‑engine transaxle layout as the coupé, but with a fabric roof that adds character — and weight — to AMG's Porsche 911 fighter. Every R190 is powered by the M178 4.0‑litre twin‑turbo V8 in one of three power outputs.
Key Facts
Platform
Mercedes‑AMG C190/R190 aluminium spaceframe
Predecessor
SLS AMG Roadster (spiritual)
Successor
AMG SL R232 (roadster)
Sibling body styles in this generation
C190 Coupé
Market Intelligence
The first‑generation AMG GT (C190/R190 combined) generated real UK engine enquiries in 2025 [MB‑VERIFIED], with the GT R 585hp tune commanding the strongest specialist interest.
Best & Worst Engines
Best Petrol Overall
M178.980 (GT S, 522hp)
“The sweet spot of the M178 range: 522hp delivers genuine supercar performance without the GT R's track‑focused suspension compromise, and the same hot‑vee V8 architecture that underpins AMG's most celebrated modern engines.”
Who it's for: buyers who want the full AMG V8 experience without the GT R's premium.
Highest Risk
M178.980 (GT R, 585hp)
“The highest‑strung factory tune of the M178 in the R190 line‑up. More power means more heat, and the hot‑vee design already runs cooling systems hard — intercooler and oil cooler integrity are critical on track‑used cars.”
Who it's for: track‑day enthusiasts with a maintenance budget to match.
Most Overlooked
M178.980 (GT, 476hp)
“Entry‑level power in a £100k+ car sounds modest, but 476hp from a twin‑turbo V8 is still more than enough to exploit the R190's chassis. Lower tune means marginally less strain on the hot‑vee cooling system.”
Who it's for: buyers who want AMG V8 character without the highest running costs.
Mercedes‑AMG GT R190 — Ownership Economics
The R190 rule
A £14,000–£18,000 M178 recon against a £60,000–£80,000 R190 sits at 18–30% of the car's value — well inside the 70% Mercedes‑Benz threshold. But against a £50,000 high‑mileage example, that same recon reaches 28–36% — still viable, but a significant proportion of the car's residual value. Value the car and its service history first.
Common Problems
R190 Engine Replacement Costs — By Engine and Condition
Market Intelligence
Most Requested E90 Engines (2025)
Most Requested E90 Variants
Average E90 Replacement Cost
Most Common E90 Failures
FAQ
Why UK Mercedes‑AMG GT R190 Owners Trust MercedesEngines.uk
Trusted AMG GT R190 Engine Suppliers
every garage and engine rebuilder in our network is vetted, rated and reviewed by real AMG GT owners, as part of the Engine Finders network.
Compare AMG GT R190 Engine Replacement Companies
see prices, warranty terms and supply‑and‑fit options side‑by‑side before you commit.
UK Engine Replacement Services for AMG GT R190
covering every variant from GT to GT R, with supply‑only or full supply‑and‑fit available nationwide.
Find the best Mercedes‑AMG GT R190 engine replacement UK drivers rely on. Compare real prices from trusted specialists on EnginesMarket today and get back on the road with confidence.
