PerfectPower database
(390 cars as of Saturday, January 10, 2026)
PerfectPower created its own database on December 11, 2023, to which you will have to refer to enter the 8 basic data of your Car sheet necessary for power measurements:
- Car weight
- Engine displacement
- Number of cylinders
- Transmission
- Tyres dimension
- Gear ratios
- Final ratio
- Cd.A
This database is accessible via an Excel file which is constantly evolving and available on Google Drive at the link at the top of the page.
However, you have to know that there are hundreds of thousands of car models in the world, and a whole life would not be enough to create a complete database (the calculation is easy to do…), so it will limit to the most popular sports cars and those of PerfectPower users, thank you for everyone’s understanding!
A lot of help is nevertheless given to you in this section, so that you are sure you can get (or have determined by PerfectPower) all the data for your car!
I) Structure of the PerfectPower database
II) Automobile-Catalog database
III) Help for PerfectPower users (exclusively)
IV) Key information on the data to be entered in PerfectPower
I) Structure of the PerfectPower database
The PerfectPower database is structured as follows:
1) Each car is identified very precisely by its full name (make + model), its power (with its standard), its type of gearbox (M = Manual or A = Automatic followed by the number of gears), and its years of production (1st year – last year). Plus a fifth optional information: its sales market (EUR = Europe, N-A = North America, FRA = France, USA = … USA, JAP = Japan, AUS = Australia for the most common) when the car is not sold worldwide or when it has different characteristics depending on the region of the globe.
2) Each car not only has the 8 basic data (in red) to enter in PerfectPower, but also indicative additional data (in blue) whose number may increase over time.
3) Two car weights are given: The claimed (manufacturer) weight (marked C, and in blue) given as an indication, and the real weight (marked R, and in red) corresponding to a weighing carried out on a precision scale (typically +- 0.1%) by an independent source (PerfectPower, automobile magazine, technical control center), or to the manufacturer’s weight when none of these three sources is available or the manufacturer’s weight is considered sufficiently reliable (American cars). In all cases, it is always the real weight (the one in red) that you must enter in PerfectPower!
4) For the sake of transparency, the source used for the real weight is systematically given in the Source column (last column), here is the nomenclature:
PP = PerfectPower (Intercomp SW500 scale (NIST certification +- 0.1%))
WC = WeightCars (French website listing the real weights of sports cars weighed by French automobile magazines on the UTAC scale (French private organization of tests and homologation))
AM = Automobile magazine (with weighing of cars on a precision scale like that of the UTAC)
TC = Technical control center
C = Claimed (manufacturer)
When several values are available, it is always the lowest which is used as a reference for the sake of homogeneity (car with the minimum number of options).
II) Automobile-Catalog database
If your car is not in the PerfectPower database, refer to the most comprehensive automotive database in the world to date, both by the number of cars it contains (hundreds of thousands!), and by the number of technical data for each car:
However, this database is not yet completely finished, its designer and his team proceed alphabetically and are currently working on letter S (Seat, Suzuki, etc.), and therefore a certain number of models are missing in the brands starting from letter S (S, T, etc).
III) Help for PerfectPower users (exclusively)
If your car is neither in the PerfectPower database nor in that of the Automobile-Catalog, you can contact me by mail from the application (Email contact button located at the very bottom of the Setup screen) by giving me the make, model, and year of your car, and this one will be added to the PerfectPower database within 24 hours following your request.
Thank you for understanding that the number of cars I can add to the PerfectPower database is limited to one per user, but you will find below a series of links that will help you create yourself your Car sheet in PerfectPower (8 basic data to enter):
Automobile-Catalog (reference database)
CarFolio (no gear ratios)
Cars-Data (no aerodynamic data)
WeightCars (real weights)
Racing Cars – Aerodynamics (aerodynamic data)
Note: If you are unable to obtain the Cd.A but you have the Cd and the dimensions of the car, here is an empirical rule (used by the Automobile-Catalog itself) that will allow you to calculate it with correct accuracy (+- 2%) for the majority of cars:
Cd.A = Cd * Width (m) * Height (m) * 0.83
For information, the coefficient 0.83 is an area coefficient corresponding to the ratio of the frontal area of the car (projected area of the car on a vertical plane perpendicular to the car movement horizontal plane) on the full area (Width * Height), and the value 0.83 simply corresponds to the average of the area coefficients of the most popular cars on the market (the majority are between 0.81 and 0.85 ie +- 2%).
IV) Key information on the data to be entered in PerfectPower
Data from all databases mentioned in this section being those of strictly original cars, you may need to customize them if your car is not completely original (car weight, tyres dimension, etc). Moreover, here are important notes regarding some of these data:
1) Car weight
- The car weights given in the PerfectPower database (real weight and claimed weight) and in the Automobile-Catalog (claimed weight) are systematically weights corresponding to the DIN standard, namely car with all fluids and in particular the full tank of fuel but without occupants or luggages.
- The claimed weights are alas sometimes optimistic (and this regardless of the standard used…), and this in a very variable way according to the manufacturers / models, and this is precisely why the PerfectPower database adds the real weight, and it is one of the only ones in the world to do so, and with unprecedented transparency too! However, one fact is indisputable: this cheating phenomenon is especially true in Europe (in particular in… Germany, that’s the height!), but not in the USA where the manufacturer’s weights correspond well to the real weights, so that the real weights of American cars are copied-pasted from the manufacturer’s weights in the PerfectPower database!
- The car weights being given with a full tank, remember to take into account the level of fuel present in the car at the time of the measurements! An example: your car is weighed or announced at 1300 kg with the full tank, but you only have half a tank of 60 L ==> you will have to enter 1300 – [(60-30) * 0.75] = 1277.5 kg or 1277 kg rounded (note: calculation with conventional gasoline of average density 0.75).
2) Tyres dimension
- The tyres dimension to enter is always that of the drive wheels, and for a four-wheel drive it is always that of the rear tyres (and whether the fit is symmetrical or asymmetrical).
3) Gear and final ratios
- It is possible with PerfectPower not to have to configure the gearbox and final ratios by carrying out a procedure identical in all respects to that systematically used on chassis dynamometer: the rev calibration. This therefore means that you don’t have to search for this data, which is by far the most difficult data to find…
- The number of gear ratios has been deliberately limited to 7 in the application, which covers well over 99% of the cars in circulation on the planet, thank you for your understanding! In any case, the power measurements only having to be performed in 2nd or 3rd gear with a serial car, the setting of all the other gears is only used for the performances simulator, and not setting gears 8 and + on a gearbox with more than 7 gears will make absolutely no difference on the results provided by the simulator, with the only possible exception of the max speed.
4) Cd.A
- It is also possible with PerfectPower not to have to configure the Cd.A by choosing to use the losses calculation mode by measure in coastdown for power measurements. However, this procedure is not recommended because of the relative difficulty of implementation on open road, not to mention that it is not possible in any case with an automatic gearbox.