Unleash the true potential of your Smart Roadster 452. Extreme and uncompromising ECU mapping.
Explore our ECU tuning modules. Click the hotspots.
Comparative curves of the four maps across the RPM range.
Does the Smart Roadster have a timing belt or chain? The 698cc engine uses a chain — but it’s not maintenance-free. Here’s what every owner needs to know.
P2042 on your Smart Roadster means the throttle actuator motor circuit has failed or is out of range. Learn the causes, how to test it, and the most effective fix.
A complete guide to the Smart Roadster targa top — how it works, how to remove and refit it, common faults, seal maintenance and finding replacement panels.
A comprehensive guide to Smart Roadster suspension setup — covering geometry, springs, dampers, anti-roll bars and alignment specs for road and track.
Upgrade your Smart Roadster 452 steering wheel with confidence. Boss kits, airbag decisions, stalk retention and the best aftermarket wheel choices explained.
Everything you need to know about Smart Roadster steering rack replacement: diagnosis, part selection, step-by-step procedure, costs and alignment advice.
The Smart Roadster steering rack problem is a known structural flaw affecting 452s of all ages. Here is what causes it, how to spot it, and what to do about it.
A complete guide to Smart Roadster STAR diagnostics: what fault codes it reads, what actuator tests it runs, and where its limits lie for ECU tuning and EEPROM access.
Everything you need to know about a smart roadster stage 3 engine build — forged internals, head porting, turbo upgrades, fuelling and realistic costs for going beyond 125 hp.
Complete guide to Smart Roadster airbag fault codes. Every B1xxx SRS code explained, with causes, diagnosis steps, and repair guidance for the 452.
Which spark plugs fit the Smart Roadster 452, the correct gap, step-by-step replacement instructions and how to read old plugs for engine health clues.
The Smart Roadster Softouch gearbox explained — what it really is, why it shifts the way it does, and how to drive and maintain it for the best results.