G-Power Boosts BMW M4 to 700 HP with GP-700 Tuning

G-Power breathes new life into the BMW M4

G-Power has unveiled a bold performance package for the current BMW M4 coupe, taking the 3.0-liter twin-turbo inline-six well beyond factory figures. The GP-700 package elevates output to a headline 700 hp and 850 Nm of torque, transforming the M4 into a markedly more aggressive and capable track-ready coupe.

Why this matters

While BMW prepares for the next-generation M3 and eventual updates to the M4 line, the current G82-based M4 still has runway. Unofficial reports suggest the present-generation M4 will remain in production through mid-2029. That gives tuners and owners a window to extract extreme performance before BMW phases in the new model. Meanwhile Mercedes-AMG is reportedly developing a high-performance CLE63, which raises the competitive stakes further and makes upgrades like G-Power's all the more relevant.

What the GP-700 package includes

G-Power’s latest project, showcased as the G4M Bi-Turbo, centers on an ECU remap dubbed GP-700 and a new sporty exhaust system. The result is a 700-horsepower motor producing 850 Nm of torque from the stock 3.0-liter straight-six. That’s a dramatic jump from BMW factory outputs, which range from about 480 hp in the base M4 to 510 hp in the Competition and 530 hp in the Competition xDrive.

• Power: 700 hp
• Torque: 850 Nm
• Key hardware: ECU software update, sport exhaust, optional aerodynamic and carbon upgrades

G-Power has not published official 0-60 mph or 0-97 km/h figures for the GP-700 M4, but context helps. The factory M4 Competition xDrive can hit 0-60 mph in roughly 3.4 seconds. With 700 hp and the right traction setup, the G-Power car will likely shave significant time off that benchmark.

Other G-Power packages and pricing

G-Power offers a tiered range of upgrades to suit different budgets and goals. European pricing is as follows:

• GP-600: raises output to 600 hp and 750 Nm, from about 3,090 EUR
• GP-650: 650 hp and 800 Nm, priced around 12,039 EUR
• GP-700: base GP-700 package listed at 15,852 EUR
• Top package: a full upgrade taking output to 800 hp and 900 Nm, starting at 29,988 EUR

Those packages can be combined with an extensive catalog of aftermarket parts: sport exhaust options, aftermarket hoods, rear wings, diffusers, side skirts, carbon-fiber bodywork, new grilles, engine covers, custom steering wheels, paddle shifters, and premium leather floor mats for a fully personalized build.

Positioning and appeal

G-Power’s work caters to enthusiasts who want a dramatic performance increase without waiting for factory special editions. The M4’s robust engine and chassis make it a natural candidate for tuning. For buyers comparing tuned M4s to rival offerings like an AMG CLE63 or upcoming BMW M models, the choice comes down to intended use: track-focused performance, straight-line speed, or a balanced daily-driver with added flair.

Quote: "The GP-700 lets owners stretch the M4’s limits while the model remains in production," says one industry analyst, reflecting the broader trend of late-cycle performance upgrades.

Final thoughts

G-Power’s GP-700 enriches the M4 lineup with headline-grabbing numbers and a full suite of personalization options. For M4 fans wanting more power and presence, these packages offer a compelling path to turn an already impressive coupe into something truly extreme.