# Mazda RX-8 — Used Car Buying Guide

AutoScout's analysis of the Mazda RX-8 on the UK used-car market. Backed by 33 million DVSA MOT tests, current AutoTrader pricing, and depreciation curves derived from CAP/Glass's Guide data.

Live interactive report: https://autoscout.fyi/cars/mazda-rx-8

## Verdict

- **Best value year**: 2010
- **Ideal trim**: 231ps (High Power) or R3
- **Target mileage**: 50,000–70,000 miles
- **Max previous owners**: 4
- **Target price**: £6,500

## Why this model

The Mazda RX-8 is a truly unique sports car, primarily because of its rotary Wankel engine. It offers an incredibly smooth, high-revving driving experience unlike anything else, with fantastic handling and a balanced chassis. It's a driver's car through and through, and its distinctive styling still turns heads. However, it's crucial to understand that the rotary engine demands specific care and has known reliability challenges, particularly with apex seals and oil consumption. It's not a 'fit and forget' car, but for an enthusiast willing to put in the effort, it offers an unparalleled driving connection for the money.

## What you should pay

Prices for the RX-8 have largely bottomed out, making it an affordable entry into a unique sports car. However, the price is heavily dependent on the engine's health. A car with a documented engine rebuild will command a premium, while one with original, high-mileage engine or known compression issues will be significantly cheaper. Be wary of 'bargains' as they often hide expensive engine work. Our target price reflects a well-maintained example with good compression, or one with a recent, documented engine rebuild.

## Which trim to buy

The 231ps (High Power) version is the one to go for, offering a significant boost in performance over the 192ps model, making the most of the rotary engine's character. If your budget allows, the R3 trim (available from 2008 onwards) is the ultimate choice. It comes with Bilstein dampers, Recaro seats, and a more aggressive body kit, enhancing the already excellent driving dynamics and interior feel. It's the most sought-after trim and holds its value best among RX-8s, especially with a healthy engine.

## What to check before you buy

- Apex seal wear leading to low compression (hot starting issues, loss of power)
- High oil consumption (requires frequent topping up)
- Catalytic converter failure (due to unburnt fuel)
- Ignition coil and spark plug issues
- Rust on rear arches and sills

## Running costs

Running an RX-8 is not cheap. Fuel economy is poor, typically around 20-25 MPG, meaning high fuel bills (approx. 31p per mile at current petrol prices). Road tax (VED) for a 2010 231ps model is high at £695 per year due to its CO2 emissions. Insurance can also be costly for a performance car. Crucially, the rotary engine consumes oil by design, so you'll need to regularly top up with specific low-ash oil. The biggest potential cost is an engine rebuild, which can range from £2,500 to £4,000+ if needed.

## Key stats

- **Fuel Type**: Petrol
- **Horsepower**: 231 PS
- **Mpg**: 23.9 MPG (combined)
- **Reliability Score**: Below average (due to engine specifics)
- **Safety Rating**: 4/5 Euro NCAP (2003 model)

## Trim comparison

| Trim | Price new | Price used | Key features |
| --- | --- | --- | --- |
| 192ps | £21,995 | £4,500 | 192 PS engine; 18-inch alloy wheels; Climate control |
| 231ps (High Power) | £23,995 | £6,000 | 231 PS engine; 6-speed manual gearbox; Leather upholstery |
| R3 | £26,995 | £8,500 | 231 PS engine; Bilstein dampers; Recaro sports seats |

## Depreciation forecast

| Year | Estimated value | Retention |
| --- | --- | --- |
| 2026 | £6,500 | 100% |
| 2027 | £6,300 | 97% |
| 2028 | £6,175 | 95% |
| 2029 | £6,050 | 93% |
| 2030 | £5,925 | 91% |

The RX-8 has already experienced its steepest depreciation. For well-maintained examples, especially the R3 trim or those with documented engine rebuilds, values are likely to stabilise or even see a slight increase over time as they become more sought after by enthusiasts. Average examples will continue a very slow decline, but the major losses are long past. Buying now means you're unlikely to lose a significant amount more, provided you buy a good one.

Total value lost since new: 9%.

## Alternatives to consider

- [Nissan 350Z](https://autoscout.fyi/cars/nissan-350z.md)
- Honda S2000
- [BMW Z4](https://autoscout.fyi/cars/bmw-z4.md)

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Source: AutoScout (https://autoscout.fyi). Part of a review of the UK used-car market across 500+ models.