- Reliability is tested to the maximum during the first time on gravel since the visit to Spain back in October.
- Temperatures nearing 30°C put stress on engines and transmissions.
- The route climbs to the season’s highest point at 2737m. Engines struggle to breathe in the thin air and lose 20 per cent power.
- Less power means mistakes are punished more severely as accelerating back to top speed takes longer.
- Concrete culverts across the roads can inflict big damage.