With Formula 1's trip to the Hungaroring coming after an extended break since the British Grand Prix, teams have had time to develop and produce new parts, which is crucial as the summer shut down is about to halt factory operations until the Belgian Grand Prix.
Due to the Hungaroring's high-downforce demands, and the impending halt to operations from the summer shutdown, nearly every team had something new on its car this weekend, or still had evaluation work to complete for developments introduced at Silverstone last time out.
Additionally, research into start procedures had to be carried out in order to prepare for the impending ban on startline driver aids coming into effect from the next race at Spa.
Mercedes
The W06 gained only subtle updates for the Hungaroring. Early weekend preparation focused on gathering aero data and establishing new start procedures.
Visibly, the only change was a new Y100 winglet under the rear wing. The so-called 'monkey seat' returned, but with a smaller set-up, in contrast to the huge six-element version run last year. Now the winglet is a simple single element slanted back on its mounting plates from above the rear crash structure.
Curiously, the winglet used unique mounting points and not the small ear-like protuberances mounted further back along the rear crash structure. It was initially thought these add-ons were a mounting for a future winglet, but it now appears they are standalone aerodynamic devices.
Ferrari
After new parts were introduced at Silverstone, Ferrari added only detail updates to the SF15-T for Hungary, the main introduction being a notched rear wing flap.
Throughout practice, the team switched between the notched rear wing, which featured small triangular cut-outs at its tips (similar to a Mercedes design) and its updated Silverstone front wing, but it chose to run older designs for qualifying.
Williams
Williams unexpectedly brought a new front wing to Budapest, run solely by Valtteri Bottas throughout the weekend. This was development planned for Spa, but rushed through production for this race, and we can expect it will run again at Spa along with other updates on both cars.
Front wing development has progressed hugely at Williams over the past few years and this new wing is another step in an evolving design philosophy.
Thus the Williams features the arched outer span, which is gaining popularity, having initially been introduced by Mercedes in China and since followed by Ferrari.
Instead of the wing's frontal profile sweeping gently from its inner tips before curling back down towards the endplate, the new profile is flatter and features a more pronounced arch formed near the endplate.
This shifts downforce towards the wing tip and also uses the arched shape to create a strong vortex to turn the wing's wake around the front tyre. As well as this arched wing tip shape, the horizontal footplate at the tip of the wing is no longer a continuous plate, but broken up by the wing's slots extending outwards.
Red Bull
Given Renault's power deficit, the tight Budapest track was always going to be an opportunity for Red Bull. Thus for the Hungaroring the car sported plenty of changes.
Firstly, the blown front axle set up has returned, while the front wing and under-nose turning vanes were constantly switched throughout practice.
Although none of these parts were new, the sole obvious novelty on the RB11 was the introduction of stalk mounted front camera pods. As with Mercedes and Ferrari, the pods are now mounted higher to move their aero disturbance out of the way of the downstream bodywork.
Toro Rosso
To help the rear wing work effectively at high-downforce levels for this weekend, Toro Rosso reintroduced the quad element last seen at Monaco.
Force India's wishbone failure
Investigation into Sergio Perez's Friday practice crash discovered a failed lower rear wishbone caused by excessive vibrations from riding over kerbs.
Wishbones are made from carbon fibre for lightness. Usually their construction is an outer fairing (to produce the aero shape) bonded on to a structural inner leg. This allows the team to change the outer aero shape without having to redesign the wishbone's structure. This is a cheeky workaround to rules that demand the whole wishbone be a structural part.
For Perez, it was the structural part that failed and the team has wrapped the inner part with extra carbon fibre to reinforce it for the stresses of the Hungaroring.
McLaren
Following the FIA's decision to allow Honda to run an extra power unit this year, McLaren fitted both cars with new engines of the same spec as run at the British GP.
The internal combustion engine, turbo, MGU-H and MGU-K were replaced on both cars, while Fernando Alonso also gained new control electronics too.
The MP4-30 chassis featured several further updates - to the front wing, mirrors and sidepods. McLaren also brought several subtly different specifications of its Silverstone front wing, which both drivers spent time back-to-back testing through free practice.
The new mirrors are mounted on more shapely stalks and paired with an "L" shape vane just behind them.
The mirror change was part of a sidepod update. The car's already slim sidepods were shrunk even further, necessitating a bulge to clear the rear engine mountings. Slimmer bodywork allows more airflow to the rear of the car for more efficient aerodynamics, i.e: more downforce for less drag.
Lotus
Late settling of payment with Pirelli meant Lotus only received its tyres shortly before the first practice session. This late delivery had knock on effects, as teams normally get their tyre allocation on Thursday.
The tyres then spend hours warming in tyre blankets, which not only warms the tyres and wheels up to near track operating temperature, but also partly cures the tyres to make them more durable.
Teams will safeguard their tyre curing process, as it can greatly improve tyre use. So Lotus had to wait for the Pirellis to be brought up to temperature, and also suffered by not having the preferred curing process carried out before running on track.
Sauber
Still awaiting a major update, the Sauber gained only small diffuser changes for Hungary.
However, the team now has technical director Mark Smith, who was most recently with Caterham, but has also worked with Jordan, Renault and Toyota.
Smith is only a couple of weeks into his time at Sauber and is the latest in a series of ex-Caterham staff to join, tasked with getting the car up to speed despite restricted finances.
A big update is in the pipeline, which should mean the return of the more complex front wing seen briefly earlier this year.
It's unclear whether this update will be ready for the next race at Spa.
Manor
The MR03B continued to run its Silverstone aero update, but additionally featuring a tiny twisted flick to the front shoulder of the sidepod. This will help direct the airflow down along the updated sidepods.
With Formula 1's trip to the Hungaroring coming after an extended break since the British Grand Prix, teams have had time to develop and produce new parts, which is crucial as the summer shut down is about to halt factory operations until the Belgian Grand Prix.
Due to the Hungaroring's high-downforce demands, and the impending halt to operations from the summer shutdown, nearly every team had something new on its car this weekend, or still had evaluation work to complete for developments introduced at Silverstone last time out.
Additionally, research into start procedures had to be carried out in order to prepare for the impending ban on startline driver aids coming into effect from the next race at Spa.
Mercedes
The W06 gained only subtle updates for the Hungaroring. Early weekend preparation focused on gathering aero data and establishing new start procedures.
Visibly, the only change was a new Y100 winglet under the rear wing. The so-called 'monkey seat' returned, but with a smaller set-up, in contrast to the huge six-element version run last year. Now the winglet is a simple single element slanted back on its mounting plates from above the rear crash structure.
Curiously, the winglet used unique mounting points and not the small ear-like protuberances mounted further back along the rear crash structure. It was initially thought these add-ons were a mounting for a future winglet, but it now appears they are standalone aerodynamic devices.
Ferrari
After new parts were introduced at Silverstone, Ferrari added only detail updates to the SF15-T for Hungary, the main introduction being a notched rear wing flap.
Throughout practice, the team switched between the notched rear wing, which featured small triangular cut-outs at its tips (similar to a Mercedes design) and its updated Silverstone front wing, but it chose to run older designs for qualifying.
Williams
Williams unexpectedly brought a new front wing to Budapest, run solely by Valtteri Bottas throughout the weekend. This was development planned for Spa, but rushed through production for this race, and we can expect it will run again at Spa along with other updates on both cars.
Front wing development has progressed hugely at Williams over the past few years and this new wing is another step in an evolving design philosophy.
Thus the Williams features the arched outer span, which is gaining popularity, having initially been introduced by Mercedes in China and since followed by Ferrari.
Instead of the wing's frontal profile sweeping gently from its inner tips before curling back down towards the endplate, the new profile is flatter and features a more pronounced arch formed near the endplate.
This shifts downforce towards the wing tip and also uses the arched shape to create a strong vortex to turn the wing's wake around the front tyre. As well as this arched wing tip shape, the horizontal footplate at the tip of the wing is no longer a continuous plate, but broken up by the wing's slots extending outwards.
Red Bull
Given Renault's power deficit, the tight Budapest track was always going to be an opportunity for Red Bull. Thus for the Hungaroring the car sported plenty of changes.
Firstly, the blown front axle set up has returned, while the front wing and under-nose turning vanes were constantly switched throughout practice.
Although none of these parts were new, the sole obvious novelty on the RB11 was the introduction of stalk mounted front camera pods. As with Mercedes and Ferrari, the pods are now mounted higher to move their aero disturbance out of the way of the downstream bodywork.
Toro Rosso
To help the rear wing work effectively at high-downforce levels for this weekend, Toro Rosso reintroduced the quad element last seen at Monaco.
Force India's wishbone failure
Investigation into Sergio Perez's Friday practice crash discovered a failed lower rear wishbone caused by excessive vibrations from riding over kerbs.
Wishbones are made from carbon fibre for lightness. Usually their construction is an outer fairing (to produce the aero shape) bonded on to a structural inner leg. This allows the team to change the outer aero shape without having to redesign the wishbone's structure. This is a cheeky workaround to rules that demand the whole wishbone be a structural part.
For Perez, it was the structural part that failed and the team has wrapped the inner part with extra carbon fibre to reinforce it for the stresses of the Hungaroring.
McLaren
Following the FIA's decision to allow Honda to run an extra power unit this year, McLaren fitted both cars with new engines of the same spec as run at the British GP.
The internal combustion engine, turbo, MGU-H and MGU-K were replaced on both cars, while Fernando Alonso also gained new control electronics too.
The MP4-30 chassis featured several further updates - to the front wing, mirrors and sidepods. McLaren also brought several subtly different specifications of its Silverstone front wing, which both drivers spent time back-to-back testing through free practice.
The new mirrors are mounted on more shapely stalks and paired with an "L" shape vane just behind them.
The mirror change was part of a sidepod update. The car's already slim sidepods were shrunk even further, necessitating a bulge to clear the rear engine mountings. Slimmer bodywork allows more airflow to the rear of the car for more efficient aerodynamics, i.e: more downforce for less drag.
Lotus
Late settling of payment with Pirelli meant Lotus only received its tyres shortly before the first practice session. This late delivery had knock on effects, as teams normally get their tyre allocation on Thursday.
The tyres then spend hours warming in tyre blankets, which not only warms the tyres and wheels up to near track operating temperature, but also partly cures the tyres to make them more durable.
Teams will safeguard their tyre curing process, as it can greatly improve tyre use. So Lotus had to wait for the Pirellis to be brought up to temperature, and also suffered by not having the preferred curing process carried out before running on track.
Sauber
Still awaiting a major update, the Sauber gained only small diffuser changes for Hungary.
However, the team now has technical director Mark Smith, who was most recently with Caterham, but has also worked with Jordan, Renault and Toyota.
Smith is only a couple of weeks into his time at Sauber and is the latest in a series of ex-Caterham staff to join, tasked with getting the car up to speed despite restricted finances.
A big update is in the pipeline, which should mean the return of the more complex front wing seen briefly earlier this year.
It's unclear whether this update will be ready for the next race at Spa.
Manor
The MR03B continued to run its Silverstone aero update, but additionally featuring a tiny twisted flick to the front shoulder of the sidepod. This will help direct the airflow down along the updated sidepods.