Start with what the Renault KJ is: a Variety with 951 cc I4, 6CV, 8.3HP, built from 1923 to 1924, the vintage years, when coachbuilders still shaped most of what was sold. What it meant takes a little longer. The shape is credited to Louis Renault.
The hardware
The engine is 951 cc I4, 6CV, 8.3HP. On the scales it comes to 860 kg. Drive goes through a 3-speed manual. The layout matters: a front engine drives the rear wheels, the classic proportion — long bonnet, cabin set back — that most people picture when they picture a sports saloon or a grand tourer. The wheelbase is 2450 mm. These are manufacturer figures carried by Wikipedia and Wikidata, not road-test measurements.
Family and rivals
In the Renault line-up the Renault KJ has a clear place: it replaced the Renault FD; it handed the line to the Renault MT; the factory was Île Seguin, Boulogne-Billancourt, Paris, France. The cars a buyer would have weighed it against include the Bugatti Type 32, the Alfa Romeo RM, the Fiat 502. Its Renault stablemates include the Renault 10 and the Renault 10CV.
Owning one today
There is no federal ownership record for the Renault KJ — it predates the complaint database or was never sold in the United States — so MotorJury publishes no running-cost figure for it. For a car of this age the price is set by the collector market and the condition of the individual example, not by a formula.