Mmm...
The condition of the spanish M-109A5E (all 96 are operational) is incomparable to the 54 Leo 2A4s stored for years without more than minimal maintenance at the Casetas barracks (Zaragoza). These tanks were even damaged by a flood that inundated the storage facility several years ago. Refurbishing them to 100% and returning them to service for transfer to Ukraine has cost a lot of money and effor...
The M-109A5E has undergone two modernisation processes in recent decades in Spain and a couple of years ago the barrels of the M284 Howitzers were replaced (2022-2023). Also various improvements to the fire navigation and control systems, such as the integration of the SIPNaP (Integrated Positioning, Navigation and Aiming System), which is currently in the process of being upgraded and replaced by SIPNaP v2 to integrate it with the new version of TALOS (Spanish Artillery Command & Controls System). In addition, a communications systems upgrade is also underway (they were to receive the new E-Linx but tech and political issues surged so in the end it looks like they will receive new L3 Harris equipment).
The only M-109s in storage in Spain, available to transfer/sell at present are the older 6 ex-Marine Infantry M-109A2s. These were replaced some time ago in the BRIMAR Artillery Group by same number of A5Es reconditioned for amphibious operations, on loan from the Spanish Army.
The programme to replace the M109s in Spain is underway but no clear and fixed timeline has been set yet.
The plans are for 109 new self-propelled howitzers on a tracked platform and another 36 on a wheeled platform (Caesar style).
Apart from the media hype with Nemesis during the last FEINDEF, no favourites have emerged from the Spanish Army. It is known that in the past the K-9 was favorably evaluated among other self-propelled artillery systems. Until now, the wheeled solution considered by the Spanish Army has always been considered truck-based.