| HONDA | In F1, and engine manufacturer and team owner for periods since 1964 (5) |
| ROLLS | ___ Royce, car and engine manufacturer (5) |
| ESKIL | Herr Suter, Swiss world-level racer who became more successful as a frame manufacturer and team boss. (5) |
| PRATT | ___ & Whitney (aircraft engine manufacturer) |
| ISUZU | Diesel engine manufacturer |
| MOTOR | Tie up boat securing back part and engine |
| TUNED | Like good pianos and engines |
| GRADS | Diploma owners, for short |
| RVERS | Camper owners, for short |
| FIRESTONE | Tyre manufacturer; 1950-1974 supplier for F1 and of the IndyCar Series since 1996 (9) |
| HUGOBOSS | Fashion company that's the clothing partner of Aston Martin F1 and celebrates its centenary in 2024 |
| ENEL | Italian multinational manufacturer and distributor of electricity and gas, first established as a public body in 1963 |
| MINARELLI | Motori ___, engine manufacturer from Bologna for whom Angel Nieto won two 125cc world titles. (9) |
| KART | Light, low-framed vehicle with small wheels and engine, used for recreational racing (4) |
| OVEREAT | Take in too much and engine will start to boil, lacking hydrogen (7) |
| SPRINGS | Useful metal coils of various sizes, which are vital in suspension and engine components.... (7) |
| MOTORPROMOTER | Publicist for an engine manufacturer? |
| DRUGBARON | Germany's foremost wig manufacturer and speed king? (4,5) |
| CARNEGIE | Andrew, U.S. steel manufacturer and philanthropist who died in 1919 (8) |
| GRESINI | A double 125cc world champion and Motogp team owner, he died recently. (7) |
