Iberia Plus often run promotions for bonus miles for car rentals. From now until 31 December, 2013, you can earn triple miles with 3 of their car rental partners – Europcar, Hertz and Sixt.
The Europcar promotion is available for all standard personal or corporate rate rentals made via www.europcar.com/iberiaplus. Europcar rentals normally earn 300-480 Avios per day (depending on size of car), so triple miles is quite lucrative, particularly for long rentals. Interestingly, this bonus is limited to one car per Iberia Plus member at the time – perhaps in some scenarios it would be worthwhile to rent a fleet of cars and park them at home for a week!
The Hertz promotion is available worldwide for rentals of longer than 3 days. PC code 193340 is required when making the reservation. Hertz rentals normally earn 300-450 Avios per day (depending on size of car), so triple miles is again quite lucrative.
The Sixt promotion is available only in Spain and Germany. The triple miles bonus only applies to PREPAID rentals of longer than 3 days for a C category car or higher. There doesn’t appear to be any code required. If you make your Sixt reservation via www.sixt.es/iberia you would normally receive 300-400 Avios per day, so again triple miles will be quite lucrative for a long rental. (although Sixt cap the maximum Avios at the equivalent of one week’s rental – presumably this cap is also tripled during this promotional period)
At 900 Avios (300 x 3) per day, a one week rental would get you 6,300 Avios. Perhaps worth checking out if you can find a cheap rental that will mostly pay for itself through the Avios…