Rover P5 Buyer's Guide
The P5 is the Rover that carried prime ministers and, famously, stayed in Downing Street service long after production ended. Our data holds one extraordinary sold result, £38,500 for a 1970 3.5 Litre automatic, against live estimates of £8,000–£15,000 for comparable cars, and that gap is the P5 market in a sentence: ordinary examples remain cheap, exceptional ones now fetch multiples of them.
Know your versions
The P5 3 Litre (1958–1967) used a 2,995cc inlet-over-exhaust six in Rover's first monocoque, in saloon form and, from 1962, the lowered-roofline Coupé (a four-door, despite the name). The P5B (1967–1973) replaced the six with the all-aluminium Buick-derived 3.5-litre V8 and gained Rostyle wheels and fog lamps; it is quicker, lighter-engined, and by far the more sought-after today, again in Saloon and Coupé bodies. The Coupé's chopped roof gives it the looks and the following; the saloon gives more headroom and usually a lower price.
What to pay
One hammer price: £38,500 for a 1970 Rover 3.5 Litre automatic in August 2026, an emphatic result that only a superb, low-mileage or historically interesting car commands. The five active listings tell the everyday story: P5B Coupés guided at £10,000–£12,000 and £8,000–£10,000, a 1973 saloon at £9,000–£12,000, a Coupé project at £10,000–£15,000, and a 1966 3 Litre Mk III listed without an estimate. On our data, then, £8,000–£15,000 is the working range for a usable P5B, and £38,500 is what the very best can now do.
What goes wrong
The monocoque rusts seriously: sills (structural, multi-section), front and rear wheelarches, floors, box sections, and the base of the D-posts, and a shiny P5 over rotten sills is a common auction sight; probe everything. The Rover V8 in the P5B is famously durable but suffers worn rocker shafts, tired timing gear and overheating when coolant changes have been skipped; the earlier IOE six is smooth and robust though a heavy, specialist rebuild when worn. Borg-Warner automatics are simple and rebuildable, power steering boxes weep and wander, and brake servos age. Inside, the P5's great asset, that gentleman's-club cabin of leather, African cherry wood and thick wool, is also the great expense; retrimming costs more than most P5s are worth, so buy a good interior.
Our view
The P5B Coupé is the one: V8 pace, the best-looking British saloon roofline of its decade, and running gear shared with half the classic world. At the £8,000–£12,000 our live estimates suggest, a solid Coupé is conspicuously good value, and our £38,500 result shows what the market will pay once a car is genuinely excellent, so the gap between "usable" and "best" is where the opportunity lies. Buy on sills and interior; the mechanicals are the easy part.
