McLaren GT Reliability: The Most Practical M840T —But Still a McLaren
Engine
7/10
Gearbox
7/10
Electric
6/10
Total Risk
4/10
Direct Answer
Expect significant running costs. Manageable if preventative maintenance is done.
Verdict
Buy with Caution
Risk Level
Medium
Annual Cost
$3,000 - $5,000
Worst-Case
$10,000+
Reliability Verdict
The GT is the most liveable M840T application and the most suitable for daily driving. It carries the same hydraulic suspension risk as the 720S but is less likely to have heavy track history. The luggage tunnel heat issue is unique to the GT body design. Overall, the GT is the 'sensible' McLaren —till an exotic, still expensive to operate, but better suited to higher-mileage owners who want daily usability.
📋 In This Guide
McLaren GT Reliability: The Grand Tourer That’s Still a Supercar
The McLaren GT (2019—present) is an attempt to answer the question: can McLaren build a car that’s genuinely usable every day?
The answer is mostly yes —ut it still uses the M840T V8, the hydraulic suspension, and the full McLaren service requirement schedule. It is a practical McLaren for people who understand what McLaren means.
1. The GT vs the 720S
| Factor | McLaren GT | McLaren 720S |
|---|---|---|
| Engine | M840T 620 hp | M840T 710 hp |
| Focus | Grand touring | Performance |
| Luggage space | 570L total | Minimal |
| Ride quality | Softer tune | Harder tune |
| Track suitability | Limited | Excellent |
| Typical use | Highway/daily | Weekend/track |
The GT is tuned for comfort and distance capability. The engine is at a lower state of tune (620 hp vs 710 hp), which means less stress on every component.
2. The Hydraulic Suspension: Same Risk
The GT uses the same hydraulic suspension platform as the 720S. The risk is identical:
- Hose and reservoir leaks appear at 20,000—0,000 miles
- Cost: $3,000—8,000
- Prevention: Inspect the underside for pink fluid before any purchase
The GT’s advantage: most examples have not been tracked, so hydraulic system stress is lower than a comparable-mileage 720S.
3. The Luggage Tunnel: GT-Specific Issue
The McLaren GT’s defining feature is its large rear luggage compartment, accessed via a glass hatch. This compartment is positioned above the M840T’s engine.
The heat problem: The mid-engine layout generates significant heat beneath the luggage compartment. McLaren addressed this with heat shielding, but:
- Rubber seals around the compartment can harden and crack
- Interior trim in the tunnel can show heat-related discoloration over time
- Items stored in the tunnel on hot days after a drive may be affected
Assessment: This is a cosmetic and comfort issue, not a mechanical risk. Heat shield replacement costs $400—1,200 if needed.
4. GT as a Daily Driver: The Reality
The GT is the most capable McLaren for daily use:
- Higher ride quality floor than the 720S or 765LT
- Adequate luggage space for weekend trips (200L front, 370L rear)
- Less aggressive suspension doesn’t tire the driver on long motorway runs
However: it is still a McLaren. Service costs are unchanged. The hydraulic system requires the same care. The belt must be serviced on schedule. Specialist-only maintenance applies.
5. Annual Ownership Cost
| Item | Annual Cost |
|---|---|
| Annual service | $1,500 —3,000 |
| Tires (road-focused) | $2,000 —3,500 |
| Hydraulic system reserve | $1,200 —2,000 |
| Belt service (amortized) | $500 —1,000 |
| Annual Total | $5,500 —10,000 |
The GT’s lower power output, softer use profile, and avoidance of track days keeps it at the lower end of the McLaren ownership cost range.
6. Buying Advice
- Best buy scenario: 2020—022 GT with under 20,000 miles, full McLaren service history
- Check specifically: Luggage tunnel seal condition, underside for hydraulic fluid
- Avoid: Any GT that shows evidence of heat damage inside the rear compartment
Related Resources
Executive Buying Advice
The GT is arguably the best used McLaren buy for non-track use. Verify hydraulic system is dry, belt is current, and coolant is clean. Budget $6,000—10,000/year. Avoid any GT that shows signs of heat damage inside the luggage tunnel —nspect the rubber seals and lining carefully.
