Skip to ContentSkip to Footer
  • Reviews
  • News
  • Top 10s
  • Tyres & tech
  • Supercars
  • Electric cars
  • Magazine
  • Shop
  • Trackdays
  • Car Valuation
Find a car review
Make
  • Abarth
  • Acura
  • Alfa Romeo
  • Alpina
  • Alpine
  • Ariel
  • Aston Martin
  • Audi
  • BAC
  • Bentley
  • BMW
  • Bugatti
  • BYD
  • Cadillac
  • Caparo
  • Caterham
  • Chevrolet
  • Chrysler
  • Citroen
  • Corvette
  • Cupra
  • Dacia
  • Dodge
  • Donkervoort
  • DS
  • Elemental
  • Ferrari
  • Fiat
  • Fisker
  • Ford
  • Genesis
  • Ginetta
  • GMA
  • Hennessey
  • Honda
  • Hyundai
  • Infiniti
  • Jaguar
  • Jeep
  • Kia
  • Koenigsegg
  • KTM
  • Lamborghini
  • Lancia
  • Land Rover
  • Lexus
  • Lotus
  • Lucid
  • Maserati
  • Mazda
  • McLaren
  • McMurtry
  • Mercedes
  • MG
  • MINI
  • Mitsubishi
  • Morgan
  • Nissan
  • Pagani
  • Peugeot
  • Piech
  • Pininfarina
  • Polestar
  • Porsche
  • Praga
  • Radical
  • Renault
  • Rimac
  • Rolls-Royce
  • Saab
  • SEAT
  • Singer
  • Skoda
  • Smart
  • Subaru
  • Suzuki
  • Tesla
  • Toyota
  • TVR
  • Vauxhall
  • Volkswagen
  • Volvo
  • Zenos
Model
Skip advert
Advertisement
Spy shots
  • Home
  • BMW

BMW M4 mule with aero mods caught in testing – pictures

BMW M4 mule with aero mods caught in testing

by: EVO team
12 Apr 2021
Go to: BMW M4 CSL revealed – M Division eyes the Porsche 911 GT3
  • BMW M4 CS prototype 2021 - front quarter
  • BMW M4 CS prototype 2021 - rear quarter
  • Skip advert
    Advertisement - Gallery continues below
  • BMW M4 CS prototype 2021 - front
  • BMW M4 CS prototype 2021 - rear
  • Skip advert
    Advertisement - Gallery continues below
  • BMW M4 CS prototype 2021 - profile
  • BMW M4 CS prototype 2021 - rear quarter
  • Skip advert
    Advertisement - Gallery continues below
  • BMW M4 CS prototype 2021 - rear

Recommended

The BMW M3 gets bright green wheels to celebrate the Nürburgring’s birthday
BMW 100 Years of Nurburgring specials
News

The BMW M3 gets bright green wheels to celebrate the Nürburgring’s birthday

To mark the 100th anniversary of the Nürburgring, BMW has released a slew of special edition models featuring numerous visual tweaks
11 Sep 2026
New V8-powered Vision BMW Alpina previews a future Aston Martin rival
BMW Vision Alpina – front
News

New V8-powered Vision BMW Alpina previews a future Aston Martin rival

Alpina is now part of the BMW Group, and its new era begins with a striking two-door V8-engined concept
15 May 2026
Best BMW M cars – the ultimate driving machines
Best BMW M cars
Best cars

Best BMW M cars – the ultimate driving machines

M is one of the fastest letters in the motoring alphabet. We pick our favourites from over 50 years of BMW M icons
1 May 2026
BMW XM review – the most powerful BMW on sale, and also the worst
BMW XM
Reviews

BMW XM review – the most powerful BMW on sale, and also the worst

The divisive BMW XM is Munich’s most powerful model ever, but it also delivers the weakest driving experience of the range
26 Feb 2026

Most Popular

This 900bhp Lotus Emeya has Bugatti specs, but carrying passengers reveals a problem
Lotus Emeya
Opinion

This 900bhp Lotus Emeya has Bugatti specs, but carrying passengers reveals a problem

A well-engineered electric performance car can be an impressive thing to drive but carrying passengers is very different from a petrol-powered equival…
2 Oct 2026
Aston Martin DBX S review – beating the Ferrari Purosangue to the top of the class
Aston Martin DBX S front
Reviews

Aston Martin DBX S review – beating the Ferrari Purosangue to the top of the class

Lots of tweaks and upgrades inside and out keep Aston Martin's SUV at the top of its game in DBX S-form
2 Oct 2026
Kia EV4 GT review – a budget Hyundai Ioniq 5 N?
Kia EV4 GT
Reviews

Kia EV4 GT review – a budget Hyundai Ioniq 5 N?

Kia says the EV4 GT is its first ever hot hatch. It’s not the last word in engagement, but a practical daily with an enthusiast’s flair
1 Oct 2026
Skip to HeaderSkip to Content
  • About Us
  • Contact Us
  • Cookie Policy
  • Privacy Policy
  • Auto Express
  • Carbuyer
  • Driving Electric
  • Social
  • Fake Reviews Policy
  • Terms & conditions
  • Privacy Preferences

Subscribe to evo magazine

Try 3 issues for just £5
Subscribe nowSubscribe now

© Copyright Carwow Studio Limited 2026. All rights reserved. evo™ is a registered trade mark. Carwow Studio Limited is part of the Carwow Group.

Follow us on FacebookFollow us on TwitterFollow us on YouTubeFollow us on InstagramAdd as a preferred source on Google
Advertisement