BAC Mono R

Just 22 of the 600 cars in the catalogue share the BAC Mono R’s combination of naturally aspirated inline-4 character, making this a car defined by a very particular kind of rarity. That figure places it in a small group where the engine layout itself becomes part of the collection story. For a collector, the Mono R is not about matching the largest numbers in the database, but about adding something few others can replicate.

The wider catalogue position sharpens that point. The Mono R reaches 0-100 km/h in 2.5 seconds, a figure that places it 15th out of 600 cars, faster than 585 cars in the collection. Its 343 bhp does not carry the same ranking, sitting at 473rd for power, but the relationship between output and acceleration reveals the character of this single-seat open roadster. With a mid-engine layout, rear-wheel drive and a naturally aspirated 2.5-litre inline-4 producing 400 Nm of torque, it focuses its numbers around response rather than outright power.

That focus separates it from the broader catalogue. Only 30 of the 600 cars combine an inline-4 engine with RWD, and the Mono R sits within an even narrower group of naturally aspirated inline-4 cars. Its top speed of 274 km/h places it 363rd among the 600, reinforcing that its appeal is not built around a single headline statistic. Instead, it occupies a distinct space where configuration matters as much as performance.

The Mono R’s production figure adds another layer of context. With 2,011 built, it is rarer than 138 of the 177 cars in the catalogue with known production figures. The used price of £195,000 places it 184th by cost, making it more expensive than 416 cars in the collection. That £569 cost per bhp reflects a machine where the value comes through the complete idea rather than power alone.

For a dream garage, the BAC Mono R introduces a different type of performance car: a UK-built, 2011 track-focused roadster with a compact footprint and a singular specification. It does not fill a familiar category beside the other cars in the catalogue. It occupies its own space.