Triumph Tr6 Service Costs & Schedule (2026)

Triumph Tr6 service: key facts

Oil service every 6,000 miles or 1 year
Basic service costs £80–£200 depending on garage
Gearbox oil: £60–£90 — don't skip this one
1 generation from 1968 to 1976
6 tracked service items across routine, major, and periodic schedules

Routine service items

These are the items covered in a standard service. Most garages include oil, oil filter and a basic inspection. The rest are typically checked or replaced on a schedule.

Service item	Interval	Typical cost
Engine oil and filter Classic car specialists recommend 6,000 miles or annually due to different metallurgy and sealing materials compared to modern engines. TR6	6,000 miles or 1 year	£80–£120 Dealer: £150–£200
Differential oil Rear differential takes SAE 90 gear oil. Change interval 24,000 miles. Low oil level or degraded oil causes differential noise and eventual crown wheel and pinion wear requiring expensive rebuild. TR6	24,000 miles or 3 years	£40–£70 Dealer: £80–£120

Major service items

These are the big-ticket items. Miss them and you risk engine or gearbox damage. The costs are higher but the consequences of skipping are much worse.

Service item	Interval	Typical cost
Gearbox oil Four-speed manual gearbox takes SAE 90 gear oil. TR6	24,000 miles or 3 years	£60–£90 Dealer: £100–£150

Periodic maintenance

Items that don't need doing at every service but should be on your radar at the right mileage or age.

Service item	Interval	Typical cost
Spark plugs Standard service interval 12,000 miles. TR6	12,000 miles or 2 years	£25–£40 Dealer: £50–£80
Brake fluid Two-year interval regardless of mileage due to brake fluid hygroscopic properties. TR6	2 years	£80–£120 Dealer: £120–£180
Coolant flush Three-year interval or 24,000 miles. TR6	24,000 miles or 3 years	£100–£150 Dealer: £150–£220

Known issues to watch for

The most common problems reported on the Triumph Tr6, ranked by severity.

dangerous

Chassis rust (TR6)

The TR6 uses a separate steel chassis with substantial side rails and cross-members that support the entire vehicle structure.

dangerous

Wheel bearing failure (TR6)

The TR6 rear wheel bearings are large ball races housed in the rear hub carriers, with the differential drive flanges bolted to the hub assembly.

major

Differential noise (TR6)

The TR6 rear differential is a Salisbury unit with crown wheel and pinion gears that are prone to wear, particularly when oil levels drop or contamination occurs.

major

Brake binding (TR6)

The TR6 front disc brake system uses single-piston Girling calipers that are vulnerable to piston seizure and slider pin corrosion.

1 more known issues tracked. Check a specific Triumph Tr6's service records — a missed service on one of these issues could mean an expensive surprise.

Buying a used Triumph Tr6? Check its service history first.

A Tr6 with a patchy service history can cost you thousands in missed timing belts, skipped oil changes, and hidden neglect. We pull the franchised dealer records — every visit, every stamp, every mileage reading — so you can see exactly what's been done and what's been skipped.

£6.99 · No records found = full refund, zero risk

Triumph Tr6 service FAQs

How often does a Triumph Tr6 need servicing?

A Triumph Tr6 needs servicing every 6,000 miles or 1 year, whichever comes first. Classic car specialists recommend 6,000 miles or annually due to different metallurgy and sealing materials compared to modern engines.

What does a Triumph Tr6 service cost?

A basic service at an independent garage costs £80–£120. Main dealer servicing runs £150–£200. Major items like timing belts or gearbox services cost significantly more. Independent garages are typically 30 to 50% cheaper for the same work.

Is a Triumph Tr6 expensive to maintain?

Routine servicing starts from £80 at an independent garage, which is about average for this class of car. The bigger costs come from periodic items like timing belts, brake fluid changes, and transmission servicing. Keeping on top of the schedule avoids expensive failures.

How do I check a Triumph Tr6's service history?

You can check any Triumph Tr6's official dealer service records online using just the registration number. The check retrieves every logged dealer visit, including dates, mileage, and work done, so you can see whether the schedule has been followed or if there are gaps. It costs £6.99 and you get a full refund if no records are found.

Triumph Tr6 Service Costs & Schedule