Introduction: Why is it so important not to confuse models?
In the post-Soviet space VAZ-2105 (“five”) and VAZ-2107 (“seven”) still remain one of the most common cars on the secondary market. Despite their external similarity, these models have fundamental differences in design, price and performance characteristics. An error in identification can result in problems when purchasing, repairing, or even registering with the traffic police.
For example, an engine from VAZ-2107 with a volume of 1.6 l is not suitable for VAZ-2105 without modifications, and the cost of spare parts for the “Seven” is often 15-20% higher. In addition, some body parts (such as tail lights or bumpers) are only partially interchangeable. In this article we will analyze all the visual and technical nuances that will help clearly identify the model even by photo or VIN code.
1. Visual differences in the body
The fastest way to distinguish a “five” from a “seven” is to pay attention to shape of the rear lights and radiator grille. U VAZ-2105 the lanterns are rectangular with vertical stripes, and VAZ-2107 - trapezoidal with horizontal. The radiator grille of the “Seven” is wider and has a chrome trim, while that of the “Five” is narrower and most often black.
Another key feature is rear bumper. U VAZ-2107 it is more massive, with plastic lining on the sides (on later models), and VAZ-2105 - simple metal, without decorative elements. Also note moldings: on the “seven” they are wider and often painted in body color, and on the “five” they are narrow black.
- 🔹 Lanterns: at VAZ-2105 - vertical stripes, VAZ-2107 — horizontal.
- 🔹 Radiator grille: the “seven” is wider with chrome, the “five” is narrower and black.
- 🔹 Bumper: at VAZ-2107 with plastic linings, VAZ-2105 - metal.
- 🔹 Moldings: on the “seven” they are wider and in body color, on the “five” they are narrow black.
2. Differences in the interior: dashboard and steering wheel
Inside the cars, the differences are even more noticeable. The main landmark is dashboard. U VAZ-2107 it is more modern: the tachometer is located to the left of the speedometer, and the speed scale is graduated to 180 km/h. B VAZ-2105 There is no tachometer (on basic versions), and the speedometer is limited to 160 km/h. In addition, the “seven” has on the panel fuel level indicator with reserve, which the “five” does not have.
The steering wheel is also different: VAZ-2107 it is four-spoke (on later models) with a logo Lada in the center, and at VAZ-2105 — three-spoke without emblems. Please also pay attention to gear shift lever: on the “seven” it is often covered with leather or has a plastic cover, while on the “five” it is a simple metal one with a rubber cover.
How to distinguish a panel from a VAZ-2106?
The VAZ-2106 has a dashboard similar to the “seven”, but the tachometer is located to the right of the speedometer, and the speed scale is graduated to 160 km/h (like the “five”). Also, the “six” does not have a fuel reserve indicator.
⚠️ Attention: On some VAZ-2105 later releases (1990s) installed panels from VAZ-2107 as an option. In this case, check the body features or VIN code.
3. Technical differences: engine and suspension
There are also key differences under the hood of the Five and Seven. Main engines for models:
- 🔧 VAZ-2105: base motor - 1.3 l (64 hp) or 1.5 l (72 hp) with carburetor
DAAZ 2105. - 🔧 VAZ-2107: 1.5 l (77 hp) or 1.6 l (80 hp) with carburetor
Solex 21073or an injector (late models).
In addition, the "seven" front suspension reinforced - the springs and shock absorbers have greater rigidity, and the anti-roll bar is thicker (diameter 22 mm versus 20 mm for the “five”). This affects handling: VAZ-2107 less prone to body roll in corners, but stiffer over bumps.
| Parameter | VAZ-2105 | VAZ-2107 |
|---|---|---|
| Engine size (base) | 1.3 l / 1.5 l | 1.5 l / 1.6 l |
| Power | 64–72 hp | 77–80 hp |
| Carburetor | DAAZ 2105 |
Solex 21073 / injector |
| Stabilizer diameter | 20 mm | 22 mm |
| Rear suspension type | Spring | Spring (reinforced) |
If an injection engine is installed under the hood, this is guaranteed VAZ-2107 (or later modification VAZ-21053 with an injector, but very few such cars were produced).
4. Documents and VIN code: how to check officially
The most reliable way to determine the model is to check VIN code or data in PTS. VIN VAZ-2105 starts with XTA2105, and VAZ-2107 - with XTA2107. The PTS also indicates the model:
- 📄 VAZ-2105: model
2105or21053(injection version). - 📄 VAZ-2107: model
2107,21072(1.3 l),21074(injector).
If there are no documents, you can use online VIN verification services (for example, autocode.rf or traffic police.rf). Please note: some VAZ-2105 after restyling in the 1990s, they could receive body elements from VAZ-2107 (for example, lights or bumper), but the VIN and title will still indicate the original model.
⚠️ Attention: When purchasing, check that the VIN on the body (under the hood and on the side member) matches the data in the title. Discrepancies may indicate a re-plate or a “repainted” car.
VIN code on the body and in the PTS|Model in the PTS (2105 or 2107)|Year of manufacture (before 1982 - only 2105)|Presence of conversion marks-->
5. Price and market nuances
On the secondary market VAZ-2107 usually costs 10-30% more VAZ-2105 with similar mileage and condition. This is due to the more modern equipment, better dynamics and popularity of the model. For example, in 2026, average prices in Russia:
- 💰 VAZ-2105 (1990–2000): 80–150 thousand rubles.
- 💰 VAZ-2107 (1990–2000): 120–200 thousand rubles.
However, there are exceptions: VAZ-2105 with injection engine (21053) or in perfect condition can cost more than a “seven” with a carburetor. Also affects the price region: in the southern regions (for example, Krasnodar Territory) prices are higher due to the demand for “classics” as a workhorse, and in the northern regions they are lower due to body corrosion.
If the seller claims that VAZ-2105 “essentially the same seven”, but asks for the same price VAZ-2107 - this is a reason to doubt the integrity of the transaction.
6. Common identification mistakes
Many people confuse VAZ-2105 and VAZ-2107 with other “classic” models, for example, with VAZ-2106 (“six”). Main misconceptions:
- ❌ Myth 1: “If there is a tachometer, that’s for sure VAZ-2107». Reality: The tachometer could be installed on VAZ-2105 as an option or modification.
- ❌ Myth 2: "Everything VAZ-2107 come with an injector.” Reality: Most “sevens” until the 2000s were carburetor.
- ❌ Myth 3: "Lanterns from VAZ-2107 fit on VAZ-2105 without modifications." Reality: Reworking of fastenings and wiring is required.
Another common mistake is to focus only on body color. For example, VAZ-2107 often painted metallic (for example, dark blue 424 or burgundy 402), whereas VAZ-2105 more common in matte colors (beige 611, blue 431). However, this is not a rule, but a trend - both models could be painted in any colors from the catalog AvtoVAZ.
7. What to do if the model cannot be determined?
If visual cues and documents are in doubt, use the following methods:
- Checking the traffic police database: Request vehicle history by VIN on the website
traffic police.rfor through the serviceAutocode. The response will indicate the model and year of manufacture. - Consultation with an expert: Contact an appraiser or a “classics” club (for example,
lada-classic.ru). They will help you with a photo or a personal inspection. - Details Analysis: Compare the catalog numbers of spare parts (for example, headlights or bumpers) with the database Exist.ru or AutoDoc. U VAZ-2105 and VAZ-2107 they differ.
If the car is located in another city, ask the seller to take a photo:
- 📸 VIN code (under the hood and on the side member).
- 📸 Body plates (usually on the right door pillar).
- 📸 Engine (number on the cylinder block).
When inspecting, pay attention to the welds in the places where the bumper and lights are attached. If they are not original, the car could be “converted” to a different model.
FAQ: Answers to frequently asked questions
Is it possible to install an engine from a VAZ-2107 on a VAZ-2105 without modifications?
No, you will need to replace the engine mounts, pan, flywheel and possibly the transmission. Motor VAZ-2107 (1.6 L) is longer and heavier, so the stock mounts VAZ-2105 won't fit. It may also be necessary to modify the exhaust system and wiring (if the engine is fuel-injected).
How to distinguish a VAZ-2105 from a VAZ-2104?
VAZ-2104 (“four”) is a station wagon based on VAZ-2105. The main differences: the shape of the rear part of the body (station wagon vs sedan), the rear door and a different interior configuration. Salon VAZ-2104 It has a folding rear row of seats and a larger trunk. From the outside, the “four” is easily recognizable by its vertical rear lights (like VAZ-2105), but with an additional door.
Is it true that the VAZ-2107 is more reliable than the VAZ-2105?
U VAZ-2107 indeed a more modern suspension and engine, but reliability depends on the year of manufacture and maintenance. For example, VAZ-2105 with a 1.5 l engine (72 hp) is considered more “survivable” in terms of resource than VAZ-2107 from 1.6 l (due to increased loads on the gearbox). Body corrosion is the same weak point for both models, but the “seven” more often suffers from rust in the arches due to its heavier engine.
Is it possible to install front optics from a VAZ-2107 on a VAZ-2105?
Technically yes, but the mounts will need to be replaced and, possibly, the sidelights will need to be modified. Headlights VAZ-2107 wider, so the standard mounting points are on VAZ-2105 won't fit. There may also be a problem with adjusting the light - the headlights of the “seven” have a different angle.
Which car is better to choose for the city: VAZ-2105 or VAZ-2107?
For the city VAZ-2105 may be more practical: it is lighter, cheaper to maintain and easier to repair. VAZ-2107 suitable if dynamics (more powerful engine) or comfort (better sound insulation and suspension) are important to you. However, keep in mind that the “seven” is more expensive to maintain: spare parts are 15-20% more expensive, and fuel consumption is higher (8-9 l/100 km versus 7-8 l for the “five”).