# Bonetto B1-4WD automotive development

> Live situation record from CLSTR: https://clstr.news/situations/bonetto-b1-4wd-automotive-development
> Updated: 2026-10-24T09:30:00.000Z. Sources: 4. Developments: 2.

Alessandro Bonetto has introduced the Bonetto B1-4WD, a high-performance reimagining of the Fiat 500 Abarth architecture. The project involves significant mechanical overhauls, most notably replacing the standard engine with an Alfa Romeo-sourced 1750 TBi four-cylinder engine tuned to produce 350 CV.

To enhance handling, the vehicle utilizes an all-wheel-drive system with variable torque distribution, capable of shifting from a 50/50 balance to a 20/80 split favoring the rear axle. The drivetrain includes a six-speed manual transmission and two limited-slip differentials. 

The vehicle features a carbon fiber body widened by 15 centimeters on each side and is equipped with Öhlins TTX four-way adjustable dampers and a Brembo braking system.

## Timeline

### 2026-10-24: Alessandro Bonetto unveils Bonetto B1-4WD high-performance concept

Tuner Alessandro Bonetto has developed the Bonetto B1-4WD, a high-performance Fiat 500 concept featuring a 350 CV Alfa Romeo engine and all-wheel drive.

2 sources. https://clstr.news/cluster/alessandro-bonetto-unveils-bonetto-b1-4wd-high-performance-concept

### 2026-10-21: Bonetto B1-4WD: High-performance Fiat 500 Abarth with 350 CV

The Bonetto B1-4WD is a road-legal, widened Fiat 500 Abarth featuring a 350 CV Alfa Romeo 1750 TBi engine and all-wheel drive.

2 sources. https://clstr.news/cluster/bonetto-b1-4wd-high-performance-fiat-500-abarth-with-350-cv

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Cite as: Bonetto B1-4WD automotive development. CLSTR, https://clstr.news/situations/bonetto-b1-4wd-automotive-development