Faster Than Ruin by Tori Gracen

When seventeen-year-old Hannah Calder is uprooted from her quiet life and dropped into the outskirts of London, she expects culture shock—not danger. Not crime. And definitely not Will Hayes, her new stepbrother: closed-off, sharp-tongued, and wrapped in the smell of gasoline and bad decisions.

Will lives by one rule—never slow down.
In the underground racing world that snakes through London's industrial backstreets, speed is currency, loyalty is survival, and every driver is tethered to a criminal ring that profits from their wins. Will is one of the best. Cold. Untouchable. A boy who built his walls so high no one ever got close enough to hurt him.

Hannah sees through them anyway.

Drawn into late-night races, illegal garages, and a city that hums with danger, Hannah discovers that Will isn't just racing for thrill—he's racing to outrun his past. As their forced proximity sharpens into stolen looks, heated arguments, and a pull neither of them wants to name, the lines between family, loyalty, and desire blur into something reckless and impossible.

But the racing world doesn't forgive weakness.
And when a violent collision—on the track and off—ties Hannah directly to Will's enemies, their relationship becomes leverage. Suddenly, love isn't just forbidden. It's dangerous.

With the police closing in, crime lords demanding blood, and a final race that could cost them everything, Hannah and Will must decide what's worth crashing for.