Sunbeam Alpine
Introduced in 1959, the Kenneth Howes-designed Sunbeam Alpine brought transatlantic glamour and genuine civility to the British sports car market, borrowing cues from the Ford Thunderbird with its finned rear wings and roll-up glass windows. Built on a stiffened floorpan derived from the Rootes Audax saloon range, the Alpine evolved through five distinct Series: starting with the 1494cc Series I and 1592cc Series II, refining interior comfort with the Series III GT/roadster and lower-fin Series IV, and culminating in the 1725cc five-bearing Series V with an all-synchromesh gearbox. Unlike harsher contemporaries from MG and Triumph, the Alpine offered a roomier cockpit, superior weather protection, and relaxed long-distance touring manners. Today, the Alpine enjoys dedicated support from the Sunbeam Alpine Owners Club, with parts availability good for mechanical running gear but challenging for rust-free steel panels and original hardtop hardware. Condition dictates value entirely, with solid survivor or restored cars commanding £9,000–£18,000.
Check a specific car?
Got a registration for a Alpine? Get an instant MOT and history report.
Common Faults & Reliability
These are the most common documented problems for the Sunbeam Alpine, sorted by their typical impact and frequency.
Cruciform chassis, sills and rear spring hanger corrosion
high severityThe unitary bodyshell of the Sunbeam Alpine relies on a multi-layer box sill assembly and an underfloor cruciform member for torsional stiffness. Water entering through neglected windscreen scuttles, blocked A-pillar drains, and rotten rear inner arches collects inside the sills and rear spring hanger boxes. On UK cars exposed to road salt and damp storage, internal rusting weakens the shell to the point where the chassis folds upward in the middle, causing the doors to jam against the B-posts. Repairing this structural decay requires extensive jigging and skilled fabrication of bespoke steel sections.
Aluminium cylinder head corrosion and blown head gaskets
high severityThe Rootes four-cylinder engine features a cast-iron block topped with an aluminium alloy cylinder head. When historic owners failed to run adequate corrosion-inhibiting antifreeze, galvanic action set in between the dissimilar metals, eating away at the head faces around the water jacket passages. This internal electrolytic corrosion compromises the cylinder head gasket fire rings, resulting in compression loss, overheating, and oil-coolant cross-contamination. Severely eroded heads require specialist aluminium welding, skimming, and thread inserts, or replacement from scarce Rootes donor units.
Radiator silting and cooling system overheating
medium severityEarly Sunbeam Alpines used a crossflow radiator with a separate header tank, while Series III through V cars used a vertical-flow radiator. Over decades of classic storage and seasonal use, limescale, rust scale from the iron block, and cast-alloy oxide sludge accumulate in the narrow radiator core tubes. Restricted coolant circulation causes the engine temperature gauge to climb rapidly in slow-moving traffic or on motorway inclines. If ignored, the resulting thermal stress quickly triggers head gasket failure or head warping on the alloy top end.
Browse by Production Year
Select a specific year to view detailed registration directory lookup and annual MOT history reports for the Sunbeam Alpine.
Example Sunbeam Alpine Vehicles
Browse real UK-registered Sunbeam Alpine vehicles. Select any registration for an instant MOT and history check.